74744742 has 8 divisors (see below), whose sum is σ = 149489496. Its totient is φ = 24914912.

The previous prime is 74744729. The next prime is 74744749. The reversal of 74744742 is 24744747.

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

74744742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 74744742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74744749) 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, 6228723 + ... + 6228734.

It is an arithmetic number, because the mean of its divisors is an integer number (18686187).

Almost surely, 2^74744742 is an apocalyptic number.

74744742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74744742 is a wasteful number, since it uses less digits than its factorization.

74744742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12457462.

The product of its digits is 175616, while the sum is 39.

The square root of 74744742 is about 8645.5041495566. The cubic root of 74744742 is about 421.2373601094.

The spelling of 74744742 in words is "seventy-four million, seven hundred forty-four thousand, seven hundred forty-two".