420129983 has 16 divisors (see below), whose sum is σ = 539567616. Its totient is φ = 317956320.

The previous prime is 420129967. The next prime is 420130001. The reversal of 420129983 is 389921024.

It is a cyclic number.

It is not a de Polignac number, because 420129983 - 2⁴ = 420129967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420129953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98273 + ... + 102458.

It is an arithmetic number, because the mean of its divisors is an integer number (33722976).

Almost surely, 2^420129983 is an apocalyptic number.

420129983 is a deficient number, since it is larger than the sum of its proper divisors (119437633).

420129983 is a wasteful number, since it uses less digits than its factorization.

420129983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200774.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 420129983 is about 20497.0725470736. The cubic root of 420129983 is about 748.9644867930.

The spelling of 420129983 in words is "four hundred twenty million, one hundred twenty-nine thousand, nine hundred eighty-three".