42507842 has 16 divisors (see below), whose sum is σ = 69636672. Its totient is φ = 19341840.

The previous prime is 42507833. The next prime is 42507853. The reversal of 42507842 is 24870524.

It is a junction number, because it is equal to n+sod(n) for n = 42507799 and 42507808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9668 + ... + 13359.

It is an arithmetic number, because the mean of its divisors is an integer number (4352292).

Almost surely, 2^42507842 is an apocalyptic number.

42507842 is a deficient number, since it is larger than the sum of its proper divisors (27128830).

42507842 is a wasteful number, since it uses less digits than its factorization.

42507842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23113.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 42507842 is about 6519.8038314047. The cubic root of 42507842 is about 348.9980651393.

The spelling of 42507842 in words is "forty-two million, five hundred seven thousand, eight hundred forty-two".