402420463 has 2 divisors, whose sum is σ = 402420464. Its totient is φ = 402420462.

The previous prime is 402420427. The next prime is 402420493. The reversal of 402420463 is 364024204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402420463 is a prime.

It is a super-2 number, since 2×402420463² = 323884458082268738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402420493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201210231 + 201210232.

It is an arithmetic number, because the mean of its divisors is an integer number (201210232).

Almost surely, 2^402420463 is an apocalyptic number.

402420463 is a deficient number, since it is larger than the sum of its proper divisors (1).

402420463 is an equidigital number, since it uses as much as digits as its factorization.

402420463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 402420463 is about 20060.4203096545. The cubic root of 402420463 is about 738.2894890570.

Adding to 402420463 its reverse (364024204), we get a palindrome (766444667).

The spelling of 402420463 in words is "four hundred two million, four hundred twenty thousand, four hundred sixty-three".