74445542 has 4 divisors (see below), whose sum is σ = 111668316. Its totient is φ = 37222770.

The previous prime is 74445493. The next prime is 74445557. The reversal of 74445542 is 24554447.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18611384 + ... + 18611387.

It is an arithmetic number, because the mean of its divisors is an integer number (27917079).

Almost surely, 2^74445542 is an apocalyptic number.

74445542 is a deficient number, since it is larger than the sum of its proper divisors (37222774).

74445542 is a wasteful number, since it uses less digits than its factorization.

74445542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37222773.

The product of its digits is 89600, while the sum is 35.

The square root of 74445542 is about 8628.1830068677. The cubic root of 74445542 is about 420.6745434277.

Adding to 74445542 its reverse (24554447), we get a palindrome (98999989).

The spelling of 74445542 in words is "seventy-four million, four hundred forty-five thousand, five hundred forty-two".