402543120241 has 12 divisors (see below), whose sum is σ = 431538117340. Its totient is φ = 375388266240.

The previous prime is 402543120197. The next prime is 402543120281. The reversal of 402543120241 is 142021345204.

It can be written as a sum of positive squares in 6 ways, for example, as 139430547216 + 263112573025 = 373404^2 + 512945^2 .

It is not a de Polignac number, because 402543120241 - 2¹⁵ = 402543087473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402543120281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6357870 + ... + 6420871.

Almost surely, 2^402543120241 is an apocalyptic number.

It is an amenable number.

402543120241 is a deficient number, since it is larger than the sum of its proper divisors (28994997099).

402543120241 is a wasteful number, since it uses less digits than its factorization.

402543120241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12778884 (or 12778867 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 402543120241 its reverse (142021345204), we get a palindrome (544564465445).

The spelling of 402543120241 in words is "four hundred two billion, five hundred forty-three million, one hundred twenty thousand, two hundred forty-one".