400142044043 has 16 divisors (see below), whose sum is σ = 473973677760. Its totient is φ = 330647619456.

The previous prime is 400142044031. The next prime is 400142044067. The reversal of 400142044043 is 340440241004.

It is a happy number.

It is not a de Polignac number, because 400142044043 - 2¹⁶ = 400141978507 is a prime.

It is a super-2 number, since 2×400142044043² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400142044243) 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 15 ways as a sum of consecutive naturals, for example, 7058696 + ... + 7115157.

It is an arithmetic number, because the mean of its divisors is an integer number (29623354860).

Almost surely, 2^400142044043 is an apocalyptic number.

400142044043 is a deficient number, since it is larger than the sum of its proper divisors (73831633717).

400142044043 is a wasteful number, since it uses less digits than its factorization.

400142044043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14174006.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 400142044043 its reverse (340440241004), we get a palindrome (740582285047).

The spelling of 400142044043 in words is "four hundred billion, one hundred forty-two million, forty-four thousand, forty-three".