124143440 has 20 divisors (see below), whose sum is σ = 288633684. Its totient is φ = 49657344.

The previous prime is 124143427. The next prime is 124143457. The reversal of 124143440 is 44341421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60590656 + 63552784 = 7784^2 + 7972^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775817 + ... + 775976.

Almost surely, 2^124143440 is an apocalyptic number.

124143440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124143440 is an abundant number, since it is smaller than the sum of its proper divisors (164490244).

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

124143440 is a wasteful number, since it uses less digits than its factorization.

124143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551806 (or 1551800 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 124143440 is about 11141.9675102739. The cubic root of 124143440 is about 498.8553013298.

Adding to 124143440 its reverse (44341421), we get a palindrome (168484861).

The spelling of 124143440 in words is "one hundred twenty-four million, one hundred forty-three thousand, four hundred forty".