401133123 has 24 divisors (see below), whose sum is σ = 586336608. Its totient is φ = 264246912.

The previous prime is 401133119. The next prime is 401133137. The reversal of 401133123 is 321331104.

It is not a de Polignac number, because 401133123 - 2² = 401133119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401133096 and 401133105.

It is not an unprimeable number, because it can be changed into a prime (401133143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323661 + ... + 324897.

It is an arithmetic number, because the mean of its divisors is an integer number (24430692).

Almost surely, 2^401133123 is an apocalyptic number.

401133123 is a deficient number, since it is larger than the sum of its proper divisors (185203485).

401133123 is a wasteful number, since it uses less digits than its factorization.

401133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 401133123 is about 20028.3080413698. The cubic root of 401133123 is about 737.5013872616.

Adding to 401133123 its reverse (321331104), we get a palindrome (722464227).

The spelling of 401133123 in words is "four hundred one million, one hundred thirty-three thousand, one hundred twenty-three".