75429778942 has 16 divisors (see below), whose sum is σ = 129373580160. Its totient is φ = 32310701208.

The previous prime is 75429778903. The next prime is 75429778943. The reversal of 75429778942 is 24987792457.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75429778943) 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, 1333548 + ... + 1388959.

It is an arithmetic number, because the mean of its divisors is an integer number (8085848760).

Almost surely, 2^75429778942 is an apocalyptic number.

75429778942 is a deficient number, since it is larger than the sum of its proper divisors (53943801218).

75429778942 is a wasteful number, since it uses less digits than its factorization.

75429778942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724495.

The product of its digits is 71124480, while the sum is 64.

The spelling of 75429778942 in words is "seventy-five billion, four hundred twenty-nine million, seven hundred seventy-eight thousand, nine hundred forty-two".