421152437 has 2 divisors, whose sum is σ = 421152438. Its totient is φ = 421152436.

The previous prime is 421152427. The next prime is 421152481. The reversal of 421152437 is 734251124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294499921 + 126652516 = 17161^2 + 11254^2 .

It is a cyclic number.

It is not a de Polignac number, because 421152437 - 2²⁴ = 404375221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421152427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210576218 + 210576219.

It is an arithmetic number, because the mean of its divisors is an integer number (210576219).

Almost surely, 2^421152437 is an apocalyptic number.

It is an amenable number.

421152437 is a deficient number, since it is larger than the sum of its proper divisors (1).

421152437 is an equidigital number, since it uses as much as digits as its factorization.

421152437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 421152437 is about 20521.9988548874. The cubic root of 421152437 is about 749.5715698286.

The spelling of 421152437 in words is "four hundred twenty-one million, one hundred fifty-two thousand, four hundred thirty-seven".