75197499442 has 12 divisors (see below), whose sum is σ = 122140317690. Its totient is φ = 34706538048.

The previous prime is 75197499341. The next prime is 75197499449. The reversal of 75197499442 is 24499479157.

It can be written as a sum of positive squares in 3 ways, for example, as 57970674441 + 17226825001 = 240771^2 + 131251^2 .

It is a super-2 number, since 2×75197499442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75197499449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111238567 + ... + 111239242.

Almost surely, 2^75197499442 is an apocalyptic number.

75197499442 is a deficient number, since it is larger than the sum of its proper divisors (46942818248).

75197499442 is a wasteful number, since it uses less digits than its factorization.

75197499442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222477837 (or 222477824 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 61.

The spelling of 75197499442 in words is "seventy-five billion, one hundred ninety-seven million, four hundred ninety-nine thousand, four hundred forty-two".