42623997 has 32 divisors (see below), whose sum is σ = 63974400. Its totient is φ = 25212096.

The previous prime is 42623989. The next prime is 42624013. The reversal of 42623997 is 79932624.

It is a happy number.

It is not a de Polignac number, because 42623997 - 2³ = 42623989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42623957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191028 + ... + 191250.

It is an arithmetic number, because the mean of its divisors is an integer number (1999200).

Almost surely, 2^42623997 is an apocalyptic number.

It is an amenable number.

42623997 is a deficient number, since it is larger than the sum of its proper divisors (21350403).

42623997 is a wasteful number, since it uses less digits than its factorization.

42623997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 268 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 42623997 is about 6528.7056144384. The cubic root of 42623997 is about 349.3156614566.

The spelling of 42623997 in words is "forty-two million, six hundred twenty-three thousand, nine hundred ninety-seven".