42658770 has 128 divisors (see below), whose sum is σ = 130222080. Its totient is φ = 8686080.

The previous prime is 42658753. The next prime is 42658783. The reversal of 42658770 is 7785624.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 136134 + ... + 136446.

It is an arithmetic number, because the mean of its divisors is an integer number (1017360).

Almost surely, 2^42658770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42658770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65111040).

42658770 is an abundant number, since it is smaller than the sum of its proper divisors (87563310).

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

42658770 is a wasteful number, since it uses less digits than its factorization.

42658770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 42658770 is about 6531.3681568259. The cubic root of 42658770 is about 349.4106271465.

The spelling of 42658770 in words is "forty-two million, six hundred fifty-eight thousand, seven hundred seventy".