74284542 has 24 divisors (see below), whose sum is σ = 161791344. Its totient is φ = 24632064.

The previous prime is 74284541. The next prime is 74284559. The reversal of 74284542 is 24548247.

It is a junction number, because it is equal to n+sod(n) for n = 74284497 and 74284506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74284541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7218 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (6741306).

Almost surely, 2^74284542 is an apocalyptic number.

74284542 is an abundant number, since it is smaller than the sum of its proper divisors (87506802).

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

74284542 is a wasteful number, since it uses less digits than its factorization.

74284542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21584 (or 21581 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 74284542 is about 8618.8480668823. The cubic root of 74284542 is about 420.3710666269.

The spelling of 74284542 in words is "seventy-four million, two hundred eighty-four thousand, five hundred forty-two".