42129574 has 16 divisors (see below), whose sum is σ = 67273200. Its totient is φ = 19730304.

The previous prime is 42129559. The next prime is 42129641. The reversal of 42129574 is 47592124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2847 + ... + 9610.

It is an arithmetic number, because the mean of its divisors is an integer number (4204575).

Almost surely, 2^42129574 is an apocalyptic number.

42129574 is a deficient number, since it is larger than the sum of its proper divisors (25143626).

42129574 is a wasteful number, since it uses less digits than its factorization.

42129574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12567.

The product of its digits is 20160, while the sum is 34.

The square root of 42129574 is about 6490.7298511030. The cubic root of 42129574 is about 347.9597599572.

The spelling of 42129574 in words is "forty-two million, one hundred twenty-nine thousand, five hundred seventy-four".