42690897 has 24 divisors (see below), whose sum is σ = 62899200. Its totient is φ = 27897408.

The previous prime is 42690887. The next prime is 42690913. The reversal of 42690897 is 79809624.

It is a happy number.

It is not a de Polignac number, because 42690897 - 2¹² = 42686801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42690827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178504 + ... + 178742.

It is an arithmetic number, because the mean of its divisors is an integer number (2620800).

Almost surely, 2^42690897 is an apocalyptic number.

It is an amenable number.

42690897 is a deficient number, since it is larger than the sum of its proper divisors (20208303).

42690897 is a wasteful number, since it uses less digits than its factorization.

42690897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 42690897 is about 6533.8271326995. The cubic root of 42690897 is about 349.4983207076.

The spelling of 42690897 in words is "forty-two million, six hundred ninety thousand, eight hundred ninety-seven".