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121032013 = 142984697
BaseRepresentation
bin1110011011011…
…00110101001101
322102202001201011
413031230311031
5221441011023
620002045221
72666520004
oct715546515
9272661634
10121032013
1162357163
1234649811
131c0c889b
1412107c3b
15a95b50d
hex736cd4d

121032013 has 4 divisors (see below), whose sum is σ = 121118140. Its totient is φ = 120945888.

The previous prime is 121032007. The next prime is 121032017. The reversal of 121032013 is 310230121.

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 74615044 + 46416969 = 8638^2 + 6813^2 .

It is a cyclic number.

It is not a de Polignac number, because 121032013 - 213 = 121023821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121031984 and 121032002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121032017) 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, 40920 + ... + 43777.

It is an arithmetic number, because the mean of its divisors is an integer number (30279535).

Almost surely, 2121032013 is an apocalyptic number.

It is an amenable number.

121032013 is a deficient number, since it is larger than the sum of its proper divisors (86127).

121032013 is an equidigital number, since it uses as much as digits as its factorization.

121032013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86126.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121032013 is about 11001.4550401299. The cubic root of 121032013 is about 494.6523600647.

Adding to 121032013 its reverse (310230121), we get a palindrome (431262134).

The spelling of 121032013 in words is "one hundred twenty-one million, thirty-two thousand, thirteen".

Divisors: 1 1429 84697 121032013