42870520 has 128 divisors (see below), whose sum is σ = 124416000. Its totient is φ = 12902400.

The previous prime is 42870493. The next prime is 42870547. The reversal of 42870520 is 2507824.

42870520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42870493) and next prime (42870547).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95256 + ... + 95704.

It is an arithmetic number, because the mean of its divisors is an integer number (972000).

Almost surely, 2^42870520 is an apocalyptic number.

42870520 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 42870520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62208000).

42870520 is an abundant number, since it is smaller than the sum of its proper divisors (81545480).

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

42870520 is a wasteful number, since it uses less digits than its factorization.

42870520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 42870520 is about 6547.5583235279. The cubic root of 42870520 is about 349.9878090992.

Adding to 42870520 its product of nonzero digits (4480), we get a cube (42875000 = 350³).

The spelling of 42870520 in words is "forty-two million, eight hundred seventy thousand, five hundred twenty".