421262593 has 2 divisors, whose sum is σ = 421262594. Its totient is φ = 421262592.

The previous prime is 421262581. The next prime is 421262609. The reversal of 421262593 is 395262124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398681089 + 22581504 = 19967^2 + 4752^2 .

It is a cyclic number.

It is not a de Polignac number, because 421262593 - 2¹³ = 421254401 is a prime.

It is a super-2 number, since 2×421262593² = 354924344522167298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421262563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210631296 + 210631297.

It is an arithmetic number, because the mean of its divisors is an integer number (210631297).

Almost surely, 2^421262593 is an apocalyptic number.

It is an amenable number.

421262593 is a deficient number, since it is larger than the sum of its proper divisors (1).

421262593 is an equidigital number, since it uses as much as digits as its factorization.

421262593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 421262593 is about 20524.6825310405. The cubic root of 421262593 is about 749.6369164036.

The spelling of 421262593 in words is "four hundred twenty-one million, two hundred sixty-two thousand, five hundred ninety-three".