74747642 has 8 divisors (see below), whose sum is σ = 113472576. Its totient is φ = 36923452.

The previous prime is 74747641. The next prime is 74747663. The reversal of 74747642 is 24674747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 74747642.

It is not an unprimeable number, because it can be changed into a prime (74747641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224978 + ... + 225309.

It is an arithmetic number, because the mean of its divisors is an integer number (14184072).

Almost surely, 2^74747642 is an apocalyptic number.

74747642 is a deficient number, since it is larger than the sum of its proper divisors (38724934).

74747642 is a wasteful number, since it uses less digits than its factorization.

74747642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450372.

The product of its digits is 263424, while the sum is 41.

The square root of 74747642 is about 8645.6718651589. The cubic root of 74747642 is about 421.2428078618.

The spelling of 74747642 in words is "seventy-four million, seven hundred forty-seven thousand, six hundred forty-two".