74021146 has 16 divisors (see below), whose sum is σ = 116037504. Its totient is φ = 35378784.

The previous prime is 74021141. The next prime is 74021147. The reversal of 74021146 is 64112047.

It is a self number, because there is not a number n which added to its sum of digits gives 74021146.

It is not an unprimeable number, because it can be changed into a prime (74021141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5115 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (7252344).

Almost surely, 2^74021146 is an apocalyptic number.

74021146 is a deficient number, since it is larger than the sum of its proper divisors (42016358).

74021146 is a wasteful number, since it uses less digits than its factorization.

74021146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18405.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 74021146 is about 8603.5542655347. The cubic root of 74021146 is about 419.8736316726.

Subtracting from 74021146 its reverse (64112047), we obtain a palindrome (9909099).

The spelling of 74021146 in words is "seventy-four million, twenty-one thousand, one hundred forty-six".