42506916 has 12 divisors (see below), whose sum is σ = 99182832. Its totient is φ = 14168968.

The previous prime is 42506909. The next prime is 42506923. The reversal of 42506916 is 61960524.

It is an interprime number because it is at equal distance from previous prime (42506909) and next prime (42506923).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1771110 + ... + 1771133.

It is an arithmetic number, because the mean of its divisors is an integer number (8265236).

Almost surely, 2^42506916 is an apocalyptic number.

It is an amenable number.

42506916 is an abundant number, since it is smaller than the sum of its proper divisors (56675916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42506916 is a wasteful number, since it uses less digits than its factorization.

42506916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542250 (or 3542248 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 42506916 is about 6519.7328166114. The cubic root of 42506916 is about 348.9955309045.

The spelling of 42506916 in words is "forty-two million, five hundred six thousand, nine hundred sixteen".