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10420297 = 23574421
BaseRepresentation
bin100111110000…
…000001001001
3201121101221221
4213300001021
510131422142
61011202041
7154366606
oct47600111
921541857
1010420297
115977a18
1235a6321
13220ac74
1415536ad
15dac767
hex9f0049

10420297 has 4 divisors (see below), whose sum is σ = 10427076. Its totient is φ = 10413520.

The previous prime is 10420279. The next prime is 10420307. The reversal of 10420297 is 79202401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5294601 + 5125696 = 2301^2 + 2264^2 .

It is a cyclic number.

It is not a de Polignac number, because 10420297 - 27 = 10420169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10420217) 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, 147 + ... + 4567.

It is an arithmetic number, because the mean of its divisors is an integer number (2606769).

Almost surely, 210420297 is an apocalyptic number.

It is an amenable number.

10420297 is a deficient number, since it is larger than the sum of its proper divisors (6779).

10420297 is an equidigital number, since it uses as much as digits as its factorization.

10420297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 10420297 is about 3228.0484816681. The cubic root of 10420297 is about 218.4204843435.

Adding to 10420297 its reverse (79202401), we get a palindrome (89622698).

The spelling of 10420297 in words is "ten million, four hundred twenty thousand, two hundred ninety-seven".

Divisors: 1 2357 4421 10420297