74638742 has 16 divisors (see below), whose sum is σ = 113134320. Its totient is φ = 36929568.

The previous prime is 74638727. The next prime is 74638747. The reversal of 74638742 is 24783647.

It is a self number, because there is not a number n which added to its sum of digits gives 74638742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74638747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146384 + ... + 146892.

It is an arithmetic number, because the mean of its divisors is an integer number (7070895).

Almost surely, 2^74638742 is an apocalyptic number.

74638742 is a deficient number, since it is larger than the sum of its proper divisors (38495578).

74638742 is a wasteful number, since it uses less digits than its factorization.

74638742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135.

The product of its digits is 225792, while the sum is 41.

The square root of 74638742 is about 8639.3716206678. The cubic root of 74638742 is about 421.0381385850.

The spelling of 74638742 in words is "seventy-four million, six hundred thirty-eight thousand, seven hundred forty-two".