42455907 has 40 divisors (see below), whose sum is σ = 71310624. Its totient is φ = 24976512.

The previous prime is 42455891. The next prime is 42455923. The reversal of 42455907 is 70955424.

It is an interprime number because it is at equal distance from previous prime (42455891) and next prime (42455923).

It is not a de Polignac number, because 42455907 - 2⁴ = 42455891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42455927) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23343 + ... + 25095.

Almost surely, 2^42455907 is an apocalyptic number.

42455907 is a deficient number, since it is larger than the sum of its proper divisors (28854717).

42455907 is a wasteful number, since it uses less digits than its factorization.

42455907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 42455907 is about 6515.8197488881. The cubic root of 42455907 is about 348.8558748961.

The spelling of 42455907 in words is "forty-two million, four hundred fifty-five thousand, nine hundred seven".