400142413123 has 4 divisors (see below), whose sum is σ = 405207507040. Its totient is φ = 395077319208.

The previous prime is 400142413109. The next prime is 400142413127. The reversal of 400142413123 is 321314241004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400142413123 - 2¹⁷ = 400142282051 is a prime.

It is a super-2 number, since 2×400142413123² (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 (400142413127) 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 3 ways as a sum of consecutive naturals, for example, 2532546840 + ... + 2532546997.

It is an arithmetic number, because the mean of its divisors is an integer number (101301876760).

Almost surely, 2^400142413123 is an apocalyptic number.

400142413123 is a deficient number, since it is larger than the sum of its proper divisors (5065093917).

400142413123 is an equidigital number, since it uses as much as digits as its factorization.

400142413123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065093916.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 400142413123 its reverse (321314241004), we get a palindrome (721456654127).

The spelling of 400142413123 in words is "four hundred billion, one hundred forty-two million, four hundred thirteen thousand, one hundred twenty-three".