42145908 has 48 divisors (see below), whose sum is σ = 113057280. Its totient is φ = 11970144.

The previous prime is 42145879. The next prime is 42145921. The reversal of 42145908 is 80954124.

It is a super-2 number, since 2×42145908² = 3552555122288928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13635 + ... + 16437.

It is an arithmetic number, because the mean of its divisors is an integer number (2355360).

Almost surely, 2^42145908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42145908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56528640).

42145908 is an abundant number, since it is smaller than the sum of its proper divisors (70911372).

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

42145908 is a wasteful number, since it uses less digits than its factorization.

42145908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 42145908 is about 6491.9879852015. The cubic root of 42145908 is about 348.0047231490.

The spelling of 42145908 in words is "forty-two million, one hundred forty-five thousand, nine hundred eight".