400123617134 has 4 divisors (see below), whose sum is σ = 600185425704. Its totient is φ = 200061808566.

The previous prime is 400123617121. The next prime is 400123617203. The reversal of 400123617134 is 431716321004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400123617134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100030904282 + ... + 100030904285.

It is an arithmetic number, because the mean of its divisors is an integer number (150046356426).

Almost surely, 2^400123617134 is an apocalyptic number.

400123617134 is a deficient number, since it is larger than the sum of its proper divisors (200061808570).

400123617134 is a wasteful number, since it uses less digits than its factorization.

400123617134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200061808569.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 400123617134 its reverse (431716321004), we get a palindrome (831839938138).

The spelling of 400123617134 in words is "four hundred billion, one hundred twenty-three million, six hundred seventeen thousand, one hundred thirty-four".