401550123 has 32 divisors (see below), whose sum is σ = 633346560. Its totient is φ = 223914240.

The previous prime is 401550089. The next prime is 401550139. The reversal of 401550123 is 321055104.

It is not a de Polignac number, because 401550123 - 2⁶ = 401550059 is a prime.

It is a super-2 number, since 2×401550123² = 322485002562630258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401550123.

It is not an unprimeable number, because it can be changed into a prime (401550323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5263 + ... + 28823.

It is an arithmetic number, because the mean of its divisors is an integer number (19792080).

Almost surely, 2^401550123 is an apocalyptic number.

401550123 is a deficient number, since it is larger than the sum of its proper divisors (231796437).

401550123 is a wasteful number, since it uses less digits than its factorization.

401550123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23619.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 401550123 is about 20038.7156025530. The cubic root of 401550123 is about 737.7568565433.

The spelling of 401550123 in words is "four hundred one million, five hundred fifty thousand, one hundred twenty-three".