79742527 has 2 divisors, whose sum is σ = 79742528. Its totient is φ = 79742526.

The previous prime is 79742519. The next prime is 79742539. The reversal of 79742527 is 72524797.

It is a weak prime.

It is an emirp because it is prime and its reverse (72524797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79742527 - 2³ = 79742519 is a prime.

It is a super-2 number, since 2×79742527² = 12717741224691458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79742557) 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 as a sum of consecutive naturals, namely, 39871263 + 39871264.

It is an arithmetic number, because the mean of its divisors is an integer number (39871264).

Almost surely, 2^79742527 is an apocalyptic number.

79742527 is a deficient number, since it is larger than the sum of its proper divisors (1).

79742527 is an equidigital number, since it uses as much as digits as its factorization.

79742527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 43.

The square root of 79742527 is about 8929.8671322702. The cubic root of 79742527 is about 430.4241839038.

It can be divided in two parts, 7974 and 2527, that added together give a palindrome (10501).

The spelling of 79742527 in words is "seventy-nine million, seven hundred forty-two thousand, five hundred twenty-seven".