421421245 has 48 divisors (see below), whose sum is σ = 624924288. Its totient is φ = 267125760.

The previous prime is 421421239. The next prime is 421421251. The reversal of 421421245 is 542124124.

It is an interprime number because it is at equal distance from previous prime (421421239) and next prime (421421251).

It is not a de Polignac number, because 421421245 - 2⁵ = 421421213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 616674 + ... + 617356.

It is an arithmetic number, because the mean of its divisors is an integer number (13019256).

Almost surely, 2^421421245 is an apocalyptic number.

It is an amenable number.

421421245 is a deficient number, since it is larger than the sum of its proper divisors (203503043).

421421245 is a wasteful number, since it uses less digits than its factorization.

421421245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 773 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 421421245 is about 20528.5470747445. The cubic root of 421421245 is about 749.7310116867.

Adding to 421421245 its reverse (542124124), we get a palindrome (963545369).

The spelling of 421421245 in words is "four hundred twenty-one million, four hundred twenty-one thousand, two hundred forty-five".