870542 has 16 divisors (see below), whose sum is σ = 1420800. Its totient is φ = 398520.

The previous prime is 870533. The next prime is 870547. The reversal of 870542 is 245078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870547) by changing a digit.

870542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (88800).

2⁸⁷⁰⁵⁴² is an apocalyptic number.

870542 is a deficient number, since it is larger than the sum of its proper divisors (550258).

870542 is a wasteful number, since it uses less digits than its factorization.

870542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 870542 is about 933.0284025688. The cubic root of 870542 is about 95.4838473088.

The spelling of 870542 in words is "eight hundred seventy thousand, five hundred forty-two".