420423132312100 has 72 divisors (see below), whose sum is σ = 933336795746880. Its totient is φ = 164328992526720.

The previous prime is 420423132311981. The next prime is 420423132312103. The reversal of 420423132312100 is 1213231324024.

It is a super-2 number, since 2×420423132312100² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420423132312103) 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, 212362479 + ... + 214333078.

It is an arithmetic number, because the mean of its divisors is an integer number (12963011052040).

Almost surely, 2^{420423132312100} is an apocalyptic number.

It is an amenable number.

420423132312100 is an abundant number, since it is smaller than the sum of its proper divisors (512913663434780).

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

420423132312100 is a wasteful number, since it uses less digits than its factorization.

420423132312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426695797 (or 426695790 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 420423132312100 its reverse (1213231324024), we get a palindrome (421636363636124).

The spelling of 420423132312100 in words is "four hundred twenty trillion, four hundred twenty-three billion, one hundred thirty-two million, three hundred twelve thousand, one hundred".