82742412 has 12 divisors (see below), whose sum is σ = 193065656. Its totient is φ = 27580800.

The previous prime is 82742411. The next prime is 82742437. The reversal of 82742412 is 21424728.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 82742412.

It is not an unprimeable number, because it can be changed into a prime (82742411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3447589 + ... + 3447612.

Almost surely, 2^82742412 is an apocalyptic number.

It is an amenable number.

82742412 is an abundant number, since it is smaller than the sum of its proper divisors (110323244).

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

82742412 is a wasteful number, since it uses less digits than its factorization.

82742412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6895208 (or 6895206 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 82742412 is about 9096.2856155686. The cubic root of 82742412 is about 435.7553476921.

The spelling of 82742412 in words is "eighty-two million, seven hundred forty-two thousand, four hundred twelve".