421326623125 has 20 divisors (see below), whose sum is σ = 532833063840. Its totient is φ = 333000278000.

The previous prime is 421326623099. The next prime is 421326623129. The reversal of 421326623125 is 521326623124.

It is not a de Polignac number, because 421326623125 - 2³⁵ = 386966884757 is a prime.

It is a super-2 number, since 2×421326623125² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421326623129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4009105 + ... + 4112854.

It is an arithmetic number, because the mean of its divisors is an integer number (26641653192).

Almost surely, 2^421326623125 is an apocalyptic number.

It is an amenable number.

421326623125 is a deficient number, since it is larger than the sum of its proper divisors (111506440715).

421326623125 is an frugal number, since it uses more digits than its factorization.

421326623125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8122062 (or 8122047 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

Subtracting 421326623125 from its reverse (521326623124), we obtain a palindrome (99999999999).

The spelling of 421326623125 in words is "four hundred twenty-one billion, three hundred twenty-six million, six hundred twenty-three thousand, one hundred twenty-five".