74779742 has 4 divisors (see below), whose sum is σ = 112169616. Its totient is φ = 37389870.

The previous prime is 74779711. The next prime is 74779811. The reversal of 74779742 is 24797747.

It is a happy number.

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

It is a congruent number.

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, 18694934 + ... + 18694937.

It is an arithmetic number, because the mean of its divisors is an integer number (28042404).

Almost surely, 2^74779742 is an apocalyptic number.

74779742 is a deficient number, since it is larger than the sum of its proper divisors (37389874).

74779742 is a wasteful number, since it uses less digits than its factorization.

74779742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37389873.

The product of its digits is 691488, while the sum is 47.

The square root of 74779742 is about 8647.5280861065. The cubic root of 74779742 is about 421.3030994357.

The spelling of 74779742 in words is "seventy-four million, seven hundred seventy-nine thousand, seven hundred forty-two".