75311042 has 4 divisors (see below), whose sum is σ = 112966566. Its totient is φ = 37655520.

The previous prime is 75311011. The next prime is 75311063. The reversal of 75311042 is 24011357.

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

It can be written as a sum of positive squares in only one way, i.e., 51681721 + 23629321 = 7189^2 + 4861^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75310999 and 75311017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18827759 + ... + 18827762.

Almost surely, 2^75311042 is an apocalyptic number.

75311042 is a deficient number, since it is larger than the sum of its proper divisors (37655524).

75311042 is a wasteful number, since it uses less digits than its factorization.

75311042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37655523.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 75311042 is about 8678.1934756031. The cubic root of 75311042 is about 422.2985129866.

Adding to 75311042 its reverse (24011357), we get a palindrome (99322399).

The spelling of 75311042 in words is "seventy-five million, three hundred eleven thousand, forty-two".