42129542 has 16 divisors (see below), whose sum is σ = 77777952. Its totient is φ = 16666560.

The previous prime is 42129539. The next prime is 42129557. The reversal of 42129542 is 24592124.

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, 115559 + ... + 115922.

It is an arithmetic number, because the mean of its divisors is an integer number (4861122).

Almost surely, 2^42129542 is an apocalyptic number.

42129542 is a deficient number, since it is larger than the sum of its proper divisors (35648410).

42129542 is a wasteful number, since it uses less digits than its factorization.

42129542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231503.

The product of its digits is 5760, while the sum is 29.

The square root of 42129542 is about 6490.7273860485. The cubic root of 42129542 is about 347.9596718582.

The spelling of 42129542 in words is "forty-two million, one hundred twenty-nine thousand, five hundred forty-two".