402240511 has 2 divisors, whose sum is σ = 402240512. Its totient is φ = 402240510.

The previous prime is 402240481. The next prime is 402240529. The reversal of 402240511 is 115042204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402240511 - 2¹⁷ = 402109439 is a prime.

It is a super-2 number, since 2×402240511² = 323594857379082242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402240551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201120255 + 201120256.

It is an arithmetic number, because the mean of its divisors is an integer number (201120256).

Almost surely, 2^402240511 is an apocalyptic number.

402240511 is a deficient number, since it is larger than the sum of its proper divisors (1).

402240511 is an equidigital number, since it uses as much as digits as its factorization.

402240511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 402240511 is about 20055.9345581302. The cubic root of 402240511 is about 738.1794246752.

Adding to 402240511 its reverse (115042204), we get a palindrome (517282715).

The spelling of 402240511 in words is "four hundred two million, two hundred forty thousand, five hundred eleven".