421702653 has 12 divisors (see below), whose sum is σ = 577883040. Its totient is φ = 273534192.

The previous prime is 421702651. The next prime is 421702661. The reversal of 421702653 is 356207124.

It is not a de Polignac number, because 421702653 - 2¹ = 421702651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421702653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421702651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47233 + ... + 55446.

It is an arithmetic number, because the mean of its divisors is an integer number (48156920).

Almost surely, 2^421702653 is an apocalyptic number.

It is an amenable number.

421702653 is a deficient number, since it is larger than the sum of its proper divisors (156180387).

421702653 is a wasteful number, since it uses less digits than its factorization.

421702653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102756 (or 102719 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 421702653 is about 20535.3999961043. The cubic root of 421702653 is about 749.8978545335.

Adding to 421702653 its reverse (356207124), we get a palindrome (777909777).

The spelling of 421702653 in words is "four hundred twenty-one million, seven hundred two thousand, six hundred fifty-three".