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10135021 = 13779617
BaseRepresentation
bin100110101010…
…010111101101
3201001220122011
4212222113231
510043310041
61001121221
7152101111
oct46522755
921056564
1010135021
1157a2656
123489211
13213b170
1414bb741
15d52e81
hex9aa5ed

10135021 has 4 divisors (see below), whose sum is σ = 10914652. Its totient is φ = 9355392.

The previous prime is 10134997. The next prime is 10135039. The reversal of 10135021 is 12053101.

Adding to 10135021 its reverse (12053101), we get a palindrome (22188122).

10135021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 617796 + 9517225 = 786^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 10135021 - 27 = 10134893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 779617 = 10135021 / (1 + 0 + 1 + 3 + 5 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10134992 and 10135010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10135051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389796 + ... + 389821.

It is an arithmetic number, because the mean of its divisors is an integer number (2728663).

Almost surely, 210135021 is an apocalyptic number.

It is an amenable number.

10135021 is a deficient number, since it is larger than the sum of its proper divisors (779631).

10135021 is an equidigital number, since it uses as much as digits as its factorization.

10135021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779630.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 10135021 is about 3183.5547741479. The cubic root of 10135021 is about 216.4087837805.

The spelling of 10135021 in words is "ten million, one hundred thirty-five thousand, twenty-one".

Divisors: 1 13 779617 10135021