74428242 has 16 divisors (see below), whose sum is σ = 170121792. Its totient is φ = 21265200.

The previous prime is 74428231. The next prime is 74428247. The reversal of 74428242 is 24282447.

It is not an unprimeable number, because it can be changed into a prime (74428247) 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, 886009 + ... + 886092.

It is an arithmetic number, because the mean of its divisors is an integer number (10632612).

Almost surely, 2^74428242 is an apocalyptic number.

74428242 is an abundant number, since it is smaller than the sum of its proper divisors (95693550).

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

74428242 is a wasteful number, since it uses less digits than its factorization.

74428242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772113.

The product of its digits is 28672, while the sum is 33.

The square root of 74428242 is about 8627.1804200445. The cubic root of 74428242 is about 420.6419548033.

The spelling of 74428242 in words is "seventy-four million, four hundred twenty-eight thousand, two hundred forty-two".