421319268 has 36 divisors (see below), whose sum is σ = 1067373580. Its totient is φ = 140126976.

The previous prime is 421319263. The next prime is 421319273. The reversal of 421319268 is 862913124.

It is an interprime number because it is at equal distance from previous prime (421319263) and next prime (421319273).

It can be written as a sum of positive squares in 2 ways, for example, as 403527744 + 17791524 = 20088^2 + 4218^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (421319263) 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 11 ways as a sum of consecutive naturals, for example, 3648 + ... + 29256.

Almost surely, 2^421319268 is an apocalyptic number.

It is an amenable number.

421319268 is an abundant number, since it is smaller than the sum of its proper divisors (646054312).

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

421319268 is a wasteful number, since it uses less digits than its factorization.

421319268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26076 (or 26071 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 421319268 is about 20526.0631393358. The cubic root of 421319268 is about 749.6705326229.

The spelling of 421319268 in words is "four hundred twenty-one million, three hundred nineteen thousand, two hundred sixty-eight".