400023123221042 has 8 divisors (see below), whose sum is σ = 601763891417136. Its totient is φ = 199435159415332.

The previous prime is 400023123220999. The next prime is 400023123221101. The reversal of 400023123221042 is 240122321320004.

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

It is a super-2 number, since 2×400023123221042² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288201096728 + ... + 288201098115.

It is an arithmetic number, because the mean of its divisors is an integer number (75220486427142).

Almost surely, 2^{400023123221042} is an apocalyptic number.

400023123221042 is a deficient number, since it is larger than the sum of its proper divisors (201740768196094).

400023123221042 is a wasteful number, since it uses less digits than its factorization.

400023123221042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576402195192.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 400023123221042 its reverse (240122321320004), we get a palindrome (640145444541046).

The spelling of 400023123221042 in words is "four hundred trillion, twenty-three billion, one hundred twenty-three million, two hundred twenty-one thousand, forty-two".