420129522 has 48 divisors (see below), whose sum is σ = 951350400. Its totient is φ = 133864416.

The previous prime is 420129503. The next prime is 420129529. The reversal of 420129522 is 225921024.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (420129529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30604 + ... + 42152.

It is an arithmetic number, because the mean of its divisors is an integer number (19819800).

Almost surely, 2^420129522 is an apocalyptic number.

420129522 is an abundant number, since it is smaller than the sum of its proper divisors (531220878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420129522 is a wasteful number, since it uses less digits than its factorization.

420129522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647 (or 11644 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 420129522 is about 20497.0613015622. The cubic root of 420129522 is about 748.9642128518.

The spelling of 420129522 in words is "four hundred twenty million, one hundred twenty-nine thousand, five hundred twenty-two".