421198753 has 2 divisors, whose sum is σ = 421198754. Its totient is φ = 421198752.

The previous prime is 421198733. The next prime is 421198763. The reversal of 421198753 is 357891124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332405824 + 88792929 = 18232^2 + 9423^2 .

It is a cyclic number.

It is not a de Polignac number, because 421198753 - 2¹⁷ = 421067681 is a prime.

It is not a weakly prime, because it can be changed into another prime (421198703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210599376 + 210599377.

It is an arithmetic number, because the mean of its divisors is an integer number (210599377).

Almost surely, 2^421198753 is an apocalyptic number.

It is an amenable number.

421198753 is a deficient number, since it is larger than the sum of its proper divisors (1).

421198753 is an equidigital number, since it uses as much as digits as its factorization.

421198753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 421198753 is about 20523.1272714467. The cubic root of 421198753 is about 749.5990467239.

The spelling of 421198753 in words is "four hundred twenty-one million, one hundred ninety-eight thousand, seven hundred fifty-three".