421379031 has 4 divisors (see below), whose sum is σ = 561838712. Its totient is φ = 280919352.

The previous prime is 421379029. The next prime is 421379047. The reversal of 421379031 is 130973124.

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

It is not a de Polignac number, because 421379031 - 2¹ = 421379029 is a prime.

It is a super-2 number, since 2×421379031² = 355120575532997922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421379031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421372031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70229836 + ... + 70229841.

It is an arithmetic number, because the mean of its divisors is an integer number (140459678).

Almost surely, 2^421379031 is an apocalyptic number.

421379031 is a deficient number, since it is larger than the sum of its proper divisors (140459681).

421379031 is a wasteful number, since it uses less digits than its factorization.

421379031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140459680.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 421379031 is about 20527.5188710180. The cubic root of 421379031 is about 749.7059771936.

The spelling of 421379031 in words is "four hundred twenty-one million, three hundred seventy-nine thousand, thirty-one".