420189535272 has 64 divisors (see below), whose sum is σ = 1131366458880. Its totient is φ = 129279151872.

The previous prime is 420189535189. The next prime is 420189535273. The reversal of 420189535272 is 272535981024.

It is a super-2 number, since 2×420189535272² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420189535273) 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, 4717938 + ... + 4806174.

It is an arithmetic number, because the mean of its divisors is an integer number (17677600920).

Almost surely, 2^420189535272 is an apocalyptic number.

It is an amenable number.

420189535272 is an abundant number, since it is smaller than the sum of its proper divisors (711176923608).

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

420189535272 is a wasteful number, since it uses less digits than its factorization.

420189535272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103522 (or 103518 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 420189535272 in words is "four hundred twenty billion, one hundred eighty-nine million, five hundred thirty-five thousand, two hundred seventy-two".