870142520 has 64 divisors (see below), whose sum is σ = 2119703040. Its totient is φ = 319564800.

The previous prime is 870142519. The next prime is 870142523. The reversal of 870142520 is 25241078.

It is a super-2 number, since 2×870142520² = 1514296010223900800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870142523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94940 + ... + 103700.

It is an arithmetic number, because the mean of its divisors is an integer number (33120360).

Almost surely, 2^870142520 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 870142520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1059851520).

870142520 is an abundant number, since it is smaller than the sum of its proper divisors (1249560520).

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

870142520 is a wasteful number, since it uses less digits than its factorization.

870142520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976 (or 8972 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 870142520 is about 29498.1782488343. The cubic root of 870142520 is about 954.6923965692.

Adding to 870142520 its reverse (25241078), we get a palindrome (895383598).

The spelling of 870142520 in words is "eight hundred seventy million, one hundred forty-two thousand, five hundred twenty".