421015244 has 24 divisors (see below), whose sum is σ = 794667888. Its totient is φ = 194016960.

The previous prime is 421015213. The next prime is 421015249. The reversal of 421015244 is 442510124.

It is not an unprimeable number, because it can be changed into a prime (421015249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30074 + ... + 41790.

It is an arithmetic number, because the mean of its divisors is an integer number (33111162).

Almost surely, 2^421015244 is an apocalyptic number.

It is an amenable number.

421015244 is a deficient number, since it is larger than the sum of its proper divisors (373652644).

421015244 is a wasteful number, since it uses less digits than its factorization.

421015244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12425 (or 12423 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 421015244 is about 20518.6559988709. The cubic root of 421015244 is about 749.4901684706.

Adding to 421015244 its reverse (442510124), we get a palindrome (863525368).

The spelling of 421015244 in words is "four hundred twenty-one million, fifteen thousand, two hundred forty-four".