75224671442 has 6 divisors (see below), whose sum is σ = 112837588983. Its totient is φ = 37612141782.

The previous prime is 75224671391. The next prime is 75224671451. The reversal of 75224671442 is 24417642257.

It can be written as a sum of positive squares in only one way, i.e., 37612335721 + 37612335721 = 193939^2 + 193939^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=193939.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75224671393 and 75224671402.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 290909 + ... + 484847.

Almost surely, 2^75224671442 is an apocalyptic number.

75224671442 is a deficient number, since it is larger than the sum of its proper divisors (37612917541).

75224671442 is an frugal number, since it uses more digits than its factorization.

75224671442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387880 (or 193941 counting only the distinct ones).

The product of its digits is 752640, while the sum is 44.

The spelling of 75224671442 in words is "seventy-five billion, two hundred twenty-four million, six hundred seventy-one thousand, four hundred forty-two".