74187542 has 16 divisors (see below), whose sum is σ = 130736592. Its totient is φ = 31127520.

The previous prime is 74187523. The next prime is 74187569. The reversal of 74187542 is 24578147.

It is a junction number, because it is equal to n+sod(n) for n = 74187496 and 74187505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129413 + ... + 129984.

It is an arithmetic number, because the mean of its divisors is an integer number (8171037).

Almost surely, 2^74187542 is an apocalyptic number.

74187542 is a deficient number, since it is larger than the sum of its proper divisors (56549050).

74187542 is a wasteful number, since it uses less digits than its factorization.

74187542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259423.

The product of its digits is 62720, while the sum is 38.

The square root of 74187542 is about 8613.2190265893. The cubic root of 74187542 is about 420.1880148392.

The spelling of 74187542 in words is "seventy-four million, one hundred eighty-seven thousand, five hundred forty-two".