74642 has 4 divisors (see below), whose sum is σ = 111966. Its totient is φ = 37320.

The previous prime is 74623. The next prime is 74653. The reversal of 74642 is 24647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52441 + 22201 = 229^2 + 149^2 .

It is a plaindrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 74642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18659 + ... + 18662.

2⁷⁴⁶⁴² is an apocalyptic number.

74642 is a deficient number, since it is larger than the sum of its proper divisors (37324).

74642 is a wasteful number, since it uses less digits than its factorization.

74642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37323.

The product of its digits is 1344, while the sum is 23.

The square root of 74642 is about 273.2068813189. The cubic root of 74642 is about 42.1044264636.

The spelling of 74642 in words is "seventy-four thousand, six hundred forty-two".