421345277387 has 4 divisors (see below), whose sum is σ = 421376601336. Its totient is φ = 421313953440.

The previous prime is 421345277377. The next prime is 421345277399. The reversal of 421345277387 is 783772543124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421345277387 - 2²² = 421341083083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421345277377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15641789 + ... + 15668702.

It is an arithmetic number, because the mean of its divisors is an integer number (105344150334).

Almost surely, 2^421345277387 is an apocalyptic number.

421345277387 is a deficient number, since it is larger than the sum of its proper divisors (31323949).

421345277387 is a wasteful number, since it uses less digits than its factorization.

421345277387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31323948.

The product of its digits is 7902720, while the sum is 53.

The spelling of 421345277387 in words is "four hundred twenty-one billion, three hundred forty-five million, two hundred seventy-seven thousand, three hundred eighty-seven".