42522780 has 96 divisors (see below), whose sum is σ = 128894976. Its totient is φ = 10433536.

The previous prime is 42522761. The next prime is 42522803. The reversal of 42522780 is 8722524.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47497 + ... + 48383.

It is an arithmetic number, because the mean of its divisors is an integer number (1342656).

Almost surely, 2^42522780 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 42522780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64447488).

42522780 is an abundant number, since it is smaller than the sum of its proper divisors (86372196).

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

42522780 is a wasteful number, since it uses less digits than its factorization.

42522780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42522780 is about 6520.9493173924. The cubic root of 42522780 is about 349.0389416951.

The spelling of 42522780 in words is "forty-two million, five hundred twenty-two thousand, seven hundred eighty".