79400085742 has 16 divisors (see below), whose sum is σ = 120188845440. Its totient is φ = 39338705592.

The previous prime is 79400085733. The next prime is 79400085749. The reversal of 79400085742 is 24758000497.

It is a junction number, because it is equal to n+sod(n) for n = 79400085692 and 79400085701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79400085749) 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, 290538 + ... + 493165.

It is an arithmetic number, because the mean of its divisors is an integer number (7511802840).

Almost surely, 2^79400085742 is an apocalyptic number.

79400085742 is a deficient number, since it is larger than the sum of its proper divisors (40788759698).

79400085742 is a wasteful number, since it uses less digits than its factorization.

79400085742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784167.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 79400085742 in words is "seventy-nine billion, four hundred million, eighty-five thousand, seven hundred forty-two".