82142278 has 16 divisors (see below), whose sum is σ = 126826560. Its totient is φ = 39883816.

The previous prime is 82142267. The next prime is 82142279. The reversal of 82142278 is 87224128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82142279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5601 + ... + 13987.

It is an arithmetic number, because the mean of its divisors is an integer number (7926660).

Almost surely, 2^82142278 is an apocalyptic number.

82142278 is a deficient number, since it is larger than the sum of its proper divisors (44684282).

82142278 is a wasteful number, since it uses less digits than its factorization.

82142278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531.

The product of its digits is 14336, while the sum is 34.

The square root of 82142278 is about 9063.2377216975. The cubic root of 82142278 is about 434.6992733651.

The spelling of 82142278 in words is "eighty-two million, one hundred forty-two thousand, two hundred seventy-eight".