421031860 has 48 divisors (see below), whose sum is σ = 968481360. Its totient is φ = 153036800.

The previous prime is 421031837. The next prime is 421031861. The reversal of 421031860 is 68130124.

It can be written as a sum of positive squares in 8 ways, for example, as 51008164 + 370023696 = 7142^2 + 19236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421031861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11491 + ... + 31210.

It is an arithmetic number, because the mean of its divisors is an integer number (20176695).

Almost surely, 2^421031860 is an apocalyptic number.

It is an amenable number.

421031860 is an abundant number, since it is smaller than the sum of its proper divisors (547449500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421031860 is a wasteful number, since it uses less digits than its factorization.

421031860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42756 (or 42754 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 421031860 is about 20519.0608946901. The cubic root of 421031860 is about 749.5000282599.

Adding to 421031860 its reverse (68130124), we get a palindrome (489161984).

The spelling of 421031860 in words is "four hundred twenty-one million, thirty-one thousand, eight hundred sixty".