421335250138 has 32 divisors (see below), whose sum is σ = 696095493120. Its totient is φ = 189680952000.

The previous prime is 421335250129. The next prime is 421335250157. The reversal of 421335250138 is 831052533124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421335250097 and 421335250106.

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, 743328 + ... + 1181188.

It is an arithmetic number, because the mean of its divisors is an integer number (21752984160).

Almost surely, 2^421335250138 is an apocalyptic number.

421335250138 is a deficient number, since it is larger than the sum of its proper divisors (274760242982).

421335250138 is a wasteful number, since it uses less digits than its factorization.

421335250138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438294.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 421335250138 in words is "four hundred twenty-one billion, three hundred thirty-five million, two hundred fifty thousand, one hundred thirty-eight".