7979424642 has 64 divisors (see below), whose sum is σ = 21331814400. Its totient is φ = 2159842320.

The previous prime is 7979424611. The next prime is 7979424653. The reversal of 7979424642 is 2464249797.

7979424642 is a `hidden beast` number, since 7 + 97 + 94 + 2 + 464 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548334 + ... + 562697.

It is an arithmetic number, because the mean of its divisors is an integer number (333309600).

Almost surely, 2^7979424642 is an apocalyptic number.

7979424642 is an abundant number, since it is smaller than the sum of its proper divisors (13352389758).

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

7979424642 is a wasteful number, since it uses less digits than its factorization.

7979424642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111068 (or 1111062 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 7979424642 is about 89327.6253014710. The cubic root of 7979424642 is about 1998.2839147802.

The spelling of 7979424642 in words is "seven billion, nine hundred seventy-nine million, four hundred twenty-four thousand, six hundred forty-two".