42122129 has 8 divisors (see below), whose sum is σ = 49314048. Its totient is φ = 35223840.

The previous prime is 42122117. The next prime is 42122137. The reversal of 42122129 is 92122124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42122129 - 2²⁰ = 41073553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42122189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73097 + ... + 73670.

It is an arithmetic number, because the mean of its divisors is an integer number (6164256).

Almost surely, 2^42122129 is an apocalyptic number.

It is an amenable number.

42122129 is a deficient number, since it is larger than the sum of its proper divisors (7191919).

42122129 is a wasteful number, since it uses less digits than its factorization.

42122129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146815.

The product of its digits is 576, while the sum is 23.

The square root of 42122129 is about 6490.1563155289. The cubic root of 42122129 is about 347.9392619809.

The spelling of 42122129 in words is "forty-two million, one hundred twenty-two thousand, one hundred twenty-nine".