74999142 has 16 divisors (see below), whose sum is σ = 166664880. Its totient is φ = 24999696.

The previous prime is 74999131. The next prime is 74999147. The reversal of 74999142 is 24199947.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74999147) 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, 694383 + ... + 694490.

It is an arithmetic number, because the mean of its divisors is an integer number (10416555).

Almost surely, 2^74999142 is an apocalyptic number.

74999142 is an abundant number, since it is smaller than the sum of its proper divisors (91665738).

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

74999142 is a wasteful number, since it uses less digits than its factorization.

74999142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388884 (or 1388878 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 74999142 is about 8660.2045010496. The cubic root of 74999142 is about 421.7147244998.

It can be divided in two parts, 7499 and 9142, that added together give a square (16641 = 129²).

The spelling of 74999142 in words is "seventy-four million, nine hundred ninety-nine thousand, one hundred forty-two".