422042129 has 4 divisors (see below), whose sum is σ = 422579184. Its totient is φ = 421505076.

The previous prime is 422042123. The next prime is 422042141. The reversal of 422042129 is 921240224.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422042129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422042098 and 422042107.

It is not an unprimeable number, because it can be changed into a prime (422042123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267347 + ... + 268920.

It is an arithmetic number, because the mean of its divisors is an integer number (105644796).

Almost surely, 2^422042129 is an apocalyptic number.

It is an amenable number.

422042129 is a deficient number, since it is larger than the sum of its proper divisors (537055).

422042129 is an equidigital number, since it uses as much as digits as its factorization.

422042129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537054.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 422042129 is about 20543.6639623997. The cubic root of 422042129 is about 750.0990263319.

The spelling of 422042129 in words is "four hundred twenty-two million, forty-two thousand, one hundred twenty-nine".