75739042 has 4 divisors (see below), whose sum is σ = 113608566. Its totient is φ = 37869520.

The previous prime is 75739031. The next prime is 75739087. The reversal of 75739042 is 24093757.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24093757 = 419 ⋅57503.

It can be written as a sum of positive squares in only one way, i.e., 73085401 + 2653641 = 8549^2 + 1629^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75738992 and 75739010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18934759 + ... + 18934762.

Almost surely, 2^75739042 is an apocalyptic number.

75739042 is a deficient number, since it is larger than the sum of its proper divisors (37869524).

75739042 is a wasteful number, since it uses less digits than its factorization.

75739042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37869523.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 75739042 is about 8702.8180493447. The cubic root of 75739042 is about 423.0969901683.

The spelling of 75739042 in words is "seventy-five million, seven hundred thirty-nine thousand, forty-two".