420129498 has 16 divisors (see below), whose sum is σ = 848579616. Its totient is φ = 138656400.

The previous prime is 420129473. The next prime is 420129499. The reversal of 420129498 is 894921024.

It is not an unprimeable number, because it can be changed into a prime (420129499) 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, 346036 + ... + 347247.

It is an arithmetic number, because the mean of its divisors is an integer number (53036226).

Almost surely, 2^420129498 is an apocalyptic number.

420129498 is an abundant number, since it is smaller than the sum of its proper divisors (428450118).

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

420129498 is a wasteful number, since it uses less digits than its factorization.

420129498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693389.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 420129498 is about 20497.0607161124. The cubic root of 420129498 is about 748.9641985902.

The spelling of 420129498 in words is "four hundred twenty million, one hundred twenty-nine thousand, four hundred ninety-eight".