421031430125 has 16 divisors (see below), whose sum is σ = 525675150000. Its totient is φ = 336679038400.

The previous prime is 421031430103. The next prime is 421031430143. The reversal of 421031430125 is 521034130124.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4008662596 + 417022767529 = 63314^2 + 645773^2 .

It is not a de Polignac number, because 421031430125 - 2³⁰ = 419957688301 is a prime.

It is a super-3 number, since 3×421031430125³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421031430094 and 421031430103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440750 + ... + 1017999.

It is an arithmetic number, because the mean of its divisors is an integer number (32854696875).

Almost surely, 2^421031430125 is an apocalyptic number.

It is an amenable number.

421031430125 is a deficient number, since it is larger than the sum of its proper divisors (104643719875).

421031430125 is a wasteful number, since it uses less digits than its factorization.

421031430125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461073 (or 1461063 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 421031430125 its reverse (521034130124), we get a palindrome (942065560249).

The spelling of 421031430125 in words is "four hundred twenty-one billion, thirty-one million, four hundred thirty thousand, one hundred twenty-five".