421205037125 has 16 divisors (see below), whose sum is σ = 543790231920. Its totient is φ = 325344577600.

The previous prime is 421205037101. The next prime is 421205037131. The reversal of 421205037125 is 521730502124.

It can be written as a sum of positive squares in 8 ways, for example, as 122107614721 + 299097422404 = 349439^2 + 546898^2 .

It is not a de Polignac number, because 421205037125 - 2⁶ = 421205037061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421205037091 and 421205037100.

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, 58093622 + ... + 58100871.

It is an arithmetic number, because the mean of its divisors is an integer number (33986889495).

Almost surely, 2^421205037125 is an apocalyptic number.

It is an amenable number.

421205037125 is a deficient number, since it is larger than the sum of its proper divisors (122585194795).

421205037125 is a wasteful number, since it uses less digits than its factorization.

421205037125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116194537 (or 116194527 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 421205037125 its reverse (521730502124), we get a palindrome (942935539249).

The spelling of 421205037125 in words is "four hundred twenty-one billion, two hundred five million, thirty-seven thousand, one hundred twenty-five".