42992880 has 160 divisors (see below), whose sum is σ = 154228224. Its totient is φ = 9704448.

The previous prime is 42992879. The next prime is 42992923. The reversal of 42992880 is 8829924.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263679 + ... + 263841.

Almost surely, 2^42992880 is an apocalyptic number.

42992880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42992880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77114112).

42992880 is an abundant number, since it is smaller than the sum of its proper divisors (111235344).

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

42992880 is a wasteful number, since it uses less digits than its factorization.

42992880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 42992880 is about 6556.8956069164. The cubic root of 42992880 is about 350.3204683867.

The spelling of 42992880 in words is "forty-two million, nine hundred ninety-two thousand, eight hundred eighty".