1244400124 has 24 divisors (see below), whose sum is σ = 2388960000. Its totient is φ = 562472880.

The previous prime is 1244400107. The next prime is 1244400149. The reversal of 1244400124 is 4210044421.

It is a super-2 number, since 2×1244400124² = 3097063337222430752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1244400095 and 1244400104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71124 + ... + 86875.

It is an arithmetic number, because the mean of its divisors is an integer number (99540000).

Almost surely, 2^1244400124 is an apocalyptic number.

It is an amenable number.

1244400124 is a deficient number, since it is larger than the sum of its proper divisors (1144559876).

1244400124 is a wasteful number, since it uses less digits than its factorization.

1244400124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158193 (or 158191 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1244400124 is about 35276.0559586811. The cubic root of 1244400124 is about 1075.6063279348.

Adding to 1244400124 its reverse (4210044421), we get a palindrome (5454444545).

The spelling of 1244400124 in words is "one billion, two hundred forty-four million, four hundred thousand, one hundred twenty-four".