421596761 has 2 divisors, whose sum is σ = 421596762. Its totient is φ = 421596760.

The previous prime is 421596737. The next prime is 421596829. The reversal of 421596761 is 167695124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402403600 + 19193161 = 20060^2 + 4381^2 .

It is a cyclic number.

It is not a de Polignac number, because 421596761 - 2⁶ = 421596697 is a prime.

It is a super-2 number, since 2×421596761² = 355487657771382242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421596701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210798380 + 210798381.

It is an arithmetic number, because the mean of its divisors is an integer number (210798381).

Almost surely, 2^421596761 is an apocalyptic number.

It is an amenable number.

421596761 is a deficient number, since it is larger than the sum of its proper divisors (1).

421596761 is an equidigital number, since it uses as much as digits as its factorization.

421596761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 421596761 is about 20532.8215547693. The cubic root of 421596761 is about 749.8350813681.

The spelling of 421596761 in words is "four hundred twenty-one million, five hundred ninety-six thousand, seven hundred sixty-one".