402440030001 has 48 divisors (see below), whose sum is σ = 595828181520. Its totient is φ = 261670556160.

The previous prime is 402440029993. The next prime is 402440030011. The reversal of 402440030001 is 100030044204.

It can be written as a sum of positive squares in 8 ways, for example, as 110256538401 + 292183491600 = 332049^2 + 540540^2 .

It is not a de Polignac number, because 402440030001 - 2³ = 402440029993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402440030011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43867651 + ... + 43876823.

It is an arithmetic number, because the mean of its divisors is an integer number (12413087115).

Almost surely, 2^402440030001 is an apocalyptic number.

It is an amenable number.

402440030001 is a deficient number, since it is larger than the sum of its proper divisors (193388151519).

402440030001 is a wasteful number, since it uses less digits than its factorization.

402440030001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906 (or 9903 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 402440030001 its reverse (100030044204), we get a palindrome (502470074205).

The spelling of 402440030001 in words is "four hundred two billion, four hundred forty million, thirty thousand, one".