74942445 has 16 divisors (see below), whose sum is σ = 120021120. Its totient is φ = 39931584.

The previous prime is 74942437. The next prime is 74942447. The reversal of 74942445 is 54424947.

It is not a de Polignac number, because 74942445 - 2³ = 74942437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74942447) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 22551 + ... + 25659.

It is an arithmetic number, because the mean of its divisors is an integer number (7501320).

Almost surely, 2^74942445 is an apocalyptic number.

It is an amenable number.

74942445 is a deficient number, since it is larger than the sum of its proper divisors (45078675).

74942445 is a wasteful number, since it uses less digits than its factorization.

74942445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724.

The product of its digits is 161280, while the sum is 39.

The square root of 74942445 is about 8656.9304606194. The cubic root of 74942445 is about 421.6084300068.

The spelling of 74942445 in words is "seventy-four million, nine hundred forty-two thousand, four hundred forty-five".