400247242133 has 8 divisors (see below), whose sum is σ = 402335148600. Its totient is φ = 398159903680.

The previous prime is 400247242127. The next prime is 400247242141. The reversal of 400247242133 is 331242742004.

It can be written as a sum of positive squares in 4 ways, for example, as 283612697809 + 116634544324 = 532553^2 + 341518^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400247242133 - 2¹⁶ = 400247176597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400247242133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400247242103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309523 + ... + 1585983.

It is an arithmetic number, because the mean of its divisors is an integer number (50291893575).

Almost surely, 2^400247242133 is an apocalyptic number.

It is an amenable number.

400247242133 is a deficient number, since it is larger than the sum of its proper divisors (2087906467).

400247242133 is a wasteful number, since it uses less digits than its factorization.

400247242133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284007.

The product of its (nonzero) digits is 32256, while the sum is 32.

Adding to 400247242133 its reverse (331242742004), we get a palindrome (731489984137).

The spelling of 400247242133 in words is "four hundred billion, two hundred forty-seven million, two hundred forty-two thousand, one hundred thirty-three".