421707824390 has 8 divisors (see below), whose sum is σ = 759074083920. Its totient is φ = 168683129752.

The previous prime is 421707824389. The next prime is 421707824471. The reversal of 421707824390 is 93428707124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21085391210 + ... + 21085391229.

It is an arithmetic number, because the mean of its divisors is an integer number (94884260490).

Almost surely, 2^421707824390 is an apocalyptic number.

421707824390 is a deficient number, since it is larger than the sum of its proper divisors (337366259530).

421707824390 is a wasteful number, since it uses less digits than its factorization.

421707824390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42170782446.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 421707824390 in words is "four hundred twenty-one billion, seven hundred seven million, eight hundred twenty-four thousand, three hundred ninety".