421440363241 has 2 divisors, whose sum is σ = 421440363242. Its totient is φ = 421440363240.

The previous prime is 421440363221. The next prime is 421440363271. The reversal of 421440363241 is 142363044124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420709201641 + 731161600 = 648621^2 + 27040^2 .

It is a cyclic number.

It is not a de Polignac number, because 421440363241 - 2¹¹ = 421440361193 is a prime.

It is a super-2 number, since 2×421440363241² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421440363197 and 421440363206.

It is not a weakly prime, because it can be changed into another prime (421440363221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210720181620 + 210720181621.

It is an arithmetic number, because the mean of its divisors is an integer number (210720181621).

Almost surely, 2^421440363241 is an apocalyptic number.

It is an amenable number.

421440363241 is a deficient number, since it is larger than the sum of its proper divisors (1).

421440363241 is an equidigital number, since it uses as much as digits as its factorization.

421440363241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 421440363241 in words is "four hundred twenty-one billion, four hundred forty million, three hundred sixty-three thousand, two hundred forty-one".