82015942 has 4 divisors (see below), whose sum is σ = 123023916. Its totient is φ = 41007970.

The previous prime is 82015933. The next prime is 82015943. The reversal of 82015942 is 24951028.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×82015942² = 13453229484294728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82015943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20503984 + ... + 20503987.

It is an arithmetic number, because the mean of its divisors is an integer number (30755979).

Almost surely, 2^82015942 is an apocalyptic number.

82015942 is a deficient number, since it is larger than the sum of its proper divisors (41007974).

82015942 is a wasteful number, since it uses less digits than its factorization.

82015942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41007973.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 82015942 is about 9056.2653450526. The cubic root of 82015942 is about 434.4763011118.

The spelling of 82015942 in words is "eighty-two million, fifteen thousand, nine hundred forty-two".