421951241 has 2 divisors, whose sum is σ = 421951242. Its totient is φ = 421951240.

The previous prime is 421951207. The next prime is 421951249. The reversal of 421951241 is 142159124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214476025 + 207475216 = 14645^2 + 14404^2 .

It is a cyclic number.

It is not a de Polignac number, because 421951241 - 2¹⁴ = 421934857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (421951249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210975620 + 210975621.

It is an arithmetic number, because the mean of its divisors is an integer number (210975621).

Almost surely, 2^421951241 is an apocalyptic number.

It is an amenable number.

421951241 is a deficient number, since it is larger than the sum of its proper divisors (1).

421951241 is an equidigital number, since it uses as much as digits as its factorization.

421951241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 421951241 is about 20541.4517744000. The cubic root of 421951241 is about 750.0451771305.

The spelling of 421951241 in words is "four hundred twenty-one million, nine hundred fifty-one thousand, two hundred forty-one".