82987942 has 8 divisors (see below), whose sum is σ = 126340056. Its totient is φ = 40874592.

The previous prime is 82987921. The next prime is 82987951. The reversal of 82987942 is 24978928.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309523 + ... + 309790.

It is an arithmetic number, because the mean of its divisors is an integer number (15792507).

Almost surely, 2^82987942 is an apocalyptic number.

82987942 is a deficient number, since it is larger than the sum of its proper divisors (43352114).

82987942 is a wasteful number, since it uses less digits than its factorization.

82987942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619382.

The product of its digits is 580608, while the sum is 49.

The square root of 82987942 is about 9109.7717863841. The cubic root of 82987942 is about 436.1859424887.

It can be divided in two parts, 829879 and 42, that added together give a square (829921 = 911²).

The spelling of 82987942 in words is "eighty-two million, nine hundred eighty-seven thousand, nine hundred forty-two".