42210297 has 12 divisors (see below), whose sum is σ = 61656660. Its totient is φ = 27823488.

The previous prime is 42210271. The next prime is 42210319. The reversal of 42210297 is 79201224.

It can be written as a sum of positive squares in 2 ways, for example, as 27625536 + 14584761 = 5256^2 + 3819^2 .

It is not a de Polignac number, because 42210297 - 2²⁰ = 41161721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42210297.

It is not an unprimeable number, because it can be changed into a prime (42210227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25548 + ... + 27149.

It is an arithmetic number, because the mean of its divisors is an integer number (5138055).

Almost surely, 2^42210297 is an apocalyptic number.

It is an amenable number.

42210297 is a deficient number, since it is larger than the sum of its proper divisors (19446363).

42210297 is a wasteful number, since it uses less digits than its factorization.

42210297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52792 (or 52789 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 42210297 is about 6496.9452052484. The cubic root of 42210297 is about 348.1818560004.

The spelling of 42210297 in words is "forty-two million, two hundred ten thousand, two hundred ninety-seven".