400041123 has 4 divisors (see below), whose sum is σ = 533388168. Its totient is φ = 266694080.

The previous prime is 400041113. The next prime is 400041137. The reversal of 400041123 is 321140004.

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 400041123 - 2⁴ = 400041107 is a prime.

It is a super-2 number, since 2×400041123² = 320065800182202258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400041113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66673518 + ... + 66673523.

It is an arithmetic number, because the mean of its divisors is an integer number (133347042).

Almost surely, 2^400041123 is an apocalyptic number.

400041123 is a deficient number, since it is larger than the sum of its proper divisors (133347045).

400041123 is a wasteful number, since it uses less digits than its factorization.

400041123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133347044.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 400041123 is about 20001.0280485779. The cubic root of 400041123 is about 736.8315486007.

Adding to 400041123 its reverse (321140004), we get a palindrome (721181127).

The spelling of 400041123 in words is "four hundred million, forty-one thousand, one hundred twenty-three".