79425505142 has 4 divisors (see below), whose sum is σ = 119138257716. Its totient is φ = 39712752570.

The previous prime is 79425505123. The next prime is 79425505157. The reversal of 79425505142 is 24150552497.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×79425505142³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79425505093 and 79425505102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19856376284 + ... + 19856376287.

It is an arithmetic number, because the mean of its divisors is an integer number (29784564429).

Almost surely, 2^79425505142 is an apocalyptic number.

79425505142 is a deficient number, since it is larger than the sum of its proper divisors (39712752574).

79425505142 is a wasteful number, since it uses less digits than its factorization.

79425505142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39712752573.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 79425505142 in words is "seventy-nine billion, four hundred twenty-five million, five hundred five thousand, one hundred forty-two".