42129575 has 12 divisors (see below), whose sum is σ = 52751088. Its totient is φ = 33374400.

The previous prime is 42129559. The next prime is 42129641. The reversal of 42129575 is 57592124.

It is not a de Polignac number, because 42129575 - 2⁴ = 42129559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5606 + ... + 10755.

It is an arithmetic number, because the mean of its divisors is an integer number (4395924).

Almost surely, 2^42129575 is an apocalyptic number.

42129575 is a deficient number, since it is larger than the sum of its proper divisors (10621513).

42129575 is a wasteful number, since it uses less digits than its factorization.

42129575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16474 (or 16469 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 42129575 is about 6490.7299281360. The cubic root of 42129575 is about 347.9597627103.

The spelling of 42129575 in words is "forty-two million, one hundred twenty-nine thousand, five hundred seventy-five".