7042398562 has 4 divisors (see below), whose sum is σ = 10563597846. Its totient is φ = 3521199280.

The previous prime is 7042398527. The next prime is 7042398581. The reversal of 7042398562 is 2658932407.

It is a Cunningham number, because it is equal to 83919²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2658932407 = 23531 ⋅112997.

It can be written as a sum of positive squares in only one way, i.e., 7042398561 + 1 = 83919^2 + 1^2 .

It is a super-3 number, since 3×7042398562³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760599639 + ... + 1760599642.

Almost surely, 2^7042398562 is an apocalyptic number.

7042398562 is a deficient number, since it is larger than the sum of its proper divisors (3521199284).

7042398562 is a wasteful number, since it uses less digits than its factorization.

7042398562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521199283.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 7042398562 is about 83919.0000059581. Note that the first 5 decimals coincide. The cubic root of 7042398562 is about 1916.7855794285.

The spelling of 7042398562 in words is "seven billion, forty-two million, three hundred ninety-eight thousand, five hundred sixty-two".