400124 has 12 divisors (see below), whose sum is σ = 711144. Its totient is φ = 196944.

The previous prime is 400123. The next prime is 400151. The reversal of 400124 is 421004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479 + ... + 1014.

It is an arithmetic number, because the mean of its divisors is an integer number (59262).

2⁴⁰⁰¹²⁴ is an apocalyptic number.

It is an amenable number.

400124 is a deficient number, since it is larger than the sum of its proper divisors (311020).

400124 is a wasteful number, since it uses less digits than its factorization.

400124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 400124 is about 632.5535550449. The cubic root of 400124 is about 73.6882428513.

Adding to 400124 its reverse (421004), we get a palindrome (821128).

The spelling of 400124 in words is "four hundred thousand, one hundred twenty-four", and thus it is an iban number.