400240120413 has 8 divisors (see below), whose sum is σ = 609889707328. Its totient is φ = 228708640224.

The previous prime is 400240120307. The next prime is 400240120429. The reversal of 400240120413 is 314021042004.

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

It is not a de Polignac number, because 400240120413 - 2¹⁴ = 400240104029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 19059053353 = 400240120413 / (4 + 0 + 0 + 2 + 4 + 0 + 1 + 2 + 0 + 4 + 1 + 3).

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 400240120413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400240120463) 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, 9529526656 + ... + 9529526697.

It is an arithmetic number, because the mean of its divisors is an integer number (76236213416).

Almost surely, 2^400240120413 is an apocalyptic number.

It is an amenable number.

400240120413 is a deficient number, since it is larger than the sum of its proper divisors (209649586915).

400240120413 is a wasteful number, since it uses less digits than its factorization.

400240120413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19059053363.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 400240120413 its reverse (314021042004), we get a palindrome (714261162417).

The spelling of 400240120413 in words is "four hundred billion, two hundred forty million, one hundred twenty thousand, four hundred thirteen".