400163123 has 8 divisors (see below), whose sum is σ = 430187520. Its totient is φ = 371035080.

The previous prime is 400163107. The next prime is 400163129. The reversal of 400163123 is 321361004.

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

It is a cyclic number.

It is not a de Polignac number, because 400163123 - 2⁴ = 400163107 is a prime.

It is a super-2 number, since 2×400163123² = 320261050018226258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400163095 and 400163104.

It is not an unprimeable number, because it can be changed into a prime (400163129) 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, 223163 + ... + 224948.

It is an arithmetic number, because the mean of its divisors is an integer number (53773440).

Almost surely, 2^400163123 is an apocalyptic number.

400163123 is a deficient number, since it is larger than the sum of its proper divisors (30024397).

400163123 is a wasteful number, since it uses less digits than its factorization.

400163123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448177.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 400163123 is about 20004.0776593174. The cubic root of 400163123 is about 736.9064444944.

The spelling of 400163123 in words is "four hundred million, one hundred sixty-three thousand, one hundred twenty-three".