402463121 has 2 divisors, whose sum is σ = 402463122. Its totient is φ = 402463120.

The previous prime is 402463109. The next prime is 402463123. The reversal of 402463121 is 121364204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216413521 + 186049600 = 14711^2 + 13640^2 .

It is a cyclic number.

It is not a de Polignac number, because 402463121 - 2⁶ = 402463057 is a prime.

Together with 402463123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402463123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201231560 + 201231561.

It is an arithmetic number, because the mean of its divisors is an integer number (201231561).

Almost surely, 2^402463121 is an apocalyptic number.

It is an amenable number.

402463121 is a deficient number, since it is larger than the sum of its proper divisors (1).

402463121 is an equidigital number, since it uses as much as digits as its factorization.

402463121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 402463121 is about 20061.4835194210. The cubic root of 402463121 is about 738.3155752390.

The spelling of 402463121 in words is "four hundred two million, four hundred sixty-three thousand, one hundred twenty-one".