402939241 has 2 divisors, whose sum is σ = 402939242. Its totient is φ = 402939240.

The previous prime is 402939179. The next prime is 402939247. The reversal of 402939241 is 142939204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345179241 + 57760000 = 18579^2 + 7600^2 .

It is a cyclic number.

It is not a de Polignac number, because 402939241 - 2⁹ = 402938729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402939197 and 402939206.

It is not a weakly prime, because it can be changed into another prime (402939247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201469620 + 201469621.

It is an arithmetic number, because the mean of its divisors is an integer number (201469621).

Almost surely, 2^402939241 is an apocalyptic number.

It is an amenable number.

402939241 is a deficient number, since it is larger than the sum of its proper divisors (1).

402939241 is an equidigital number, since it uses as much as digits as its factorization.

402939241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 402939241 is about 20073.3465321555. The cubic root of 402939241 is about 738.6066066932.

The spelling of 402939241 in words is "four hundred two million, nine hundred thirty-nine thousand, two hundred forty-one".