401156123 has 8 divisors (see below), whose sum is σ = 425238192. Its totient is φ = 377127936.

The previous prime is 401156083. The next prime is 401156141. The reversal of 401156123 is 321651104.

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 401156123 - 2²² = 396961819 is a prime.

It is a super-2 number, since 2×401156123² = 321852470040782258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401152123) 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, 2411 + ... + 28427.

It is an arithmetic number, because the mean of its divisors is an integer number (53154774).

Almost surely, 2^401156123 is an apocalyptic number.

401156123 is a deficient number, since it is larger than the sum of its proper divisors (24082069).

401156123 is a wasteful number, since it uses less digits than its factorization.

401156123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26941.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 401156123 is about 20028.8822204336. The cubic root of 401156123 is about 737.5154825056.

The spelling of 401156123 in words is "four hundred one million, one hundred fifty-six thousand, one hundred twenty-three".