400144123401 has 8 divisors (see below), whose sum is σ = 582027815904. Its totient is φ = 242511589920.

The previous prime is 400144123397. The next prime is 400144123471. The reversal of 400144123401 is 104321441004.

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

It is not a de Polignac number, because 400144123401 - 2² = 400144123397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400144123471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6062789716 + ... + 6062789781.

It is an arithmetic number, because the mean of its divisors is an integer number (72753476988).

Almost surely, 2^400144123401 is an apocalyptic number.

It is an amenable number.

400144123401 is a deficient number, since it is larger than the sum of its proper divisors (181883692503).

400144123401 is a wasteful number, since it uses less digits than its factorization.

400144123401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125579511.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 400144123401 its reverse (104321441004), we get a palindrome (504465564405).

The spelling of 400144123401 in words is "four hundred billion, one hundred forty-four million, one hundred twenty-three thousand, four hundred one".