74391042 has 48 divisors (see below), whose sum is σ = 172176480. Its totient is φ = 21352320.

The previous prime is 74391017. The next prime is 74391043. The reversal of 74391042 is 24019347.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74391043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11098 + ... + 16490.

It is an arithmetic number, because the mean of its divisors is an integer number (3587010).

Almost surely, 2^74391042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74391042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86088240).

74391042 is an abundant number, since it is smaller than the sum of its proper divisors (97785438).

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

74391042 is a wasteful number, since it uses less digits than its factorization.

74391042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5439 (or 5428 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 74391042 is about 8625.0241738792. The cubic root of 74391042 is about 420.5718627343.

The spelling of 74391042 in words is "seventy-four million, three hundred ninety-one thousand, forty-two".