402240301453 has 2 divisors, whose sum is σ = 402240301454. Its totient is φ = 402240301452.

The previous prime is 402240301399. The next prime is 402240301459. The reversal of 402240301453 is 354103042204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400216921129 + 2023380324 = 632627^2 + 44982^2 .

It is a cyclic number.

It is not a de Polignac number, because 402240301453 - 2³⁷ = 264801347981 is a prime.

It is a super-2 number, since 2×402240301453² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402240301459) 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, 201120150726 + 201120150727.

It is an arithmetic number, because the mean of its divisors is an integer number (201120150727).

Almost surely, 2^402240301453 is an apocalyptic number.

It is an amenable number.

402240301453 is a deficient number, since it is larger than the sum of its proper divisors (1).

402240301453 is an equidigital number, since it uses as much as digits as its factorization.

402240301453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 402240301453 its reverse (354103042204), we get a palindrome (756343343657).

The spelling of 402240301453 in words is "four hundred two billion, two hundred forty million, three hundred one thousand, four hundred fifty-three".