421333445149 has 2 divisors, whose sum is σ = 421333445150. Its totient is φ = 421333445148.

The previous prime is 421333445119. The next prime is 421333445153. The reversal of 421333445149 is 941544333124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322985349124 + 98348096025 = 568318^2 + 313605^2 .

It is a cyclic number.

It is not a de Polignac number, because 421333445149 - 2⁷ = 421333445021 is a prime.

It is a super-2 number, since 2×421333445149² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421333445119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210666722574 + 210666722575.

It is an arithmetic number, because the mean of its divisors is an integer number (210666722575).

Almost surely, 2^421333445149 is an apocalyptic number.

It is an amenable number.

421333445149 is a deficient number, since it is larger than the sum of its proper divisors (1).

421333445149 is an equidigital number, since it uses as much as digits as its factorization.

421333445149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 43.

The spelling of 421333445149 in words is "four hundred twenty-one billion, three hundred thirty-three million, four hundred forty-five thousand, one hundred forty-nine".