400111124 has 12 divisors (see below), whose sum is σ = 800222304. Its totient is φ = 171476184.

The previous prime is 400111121. The next prime is 400111147. The reversal of 400111124 is 421111004.

400111124 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 400111099 and 400111108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400111121) 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, 7144814 + ... + 7144869.

It is an arithmetic number, because the mean of its divisors is an integer number (66685192).

Almost surely, 2^400111124 is an apocalyptic number.

It is an amenable number.

400111124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400111124 is a wasteful number, since it uses less digits than its factorization.

400111124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14289694 (or 14289692 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 400111124 is about 20002.7779070808. Note that the first 3 decimals coincide. The cubic root of 400111124 is about 736.8745241300.

Adding to 400111124 its reverse (421111004), we get a palindrome (821222128).

The spelling of 400111124 in words is "four hundred million, one hundred eleven thousand, one hundred twenty-four".