1244040030 has 24 divisors (see below), whose sum is σ = 3234504312. Its totient is φ = 331743984.

The previous prime is 1244040023. The next prime is 1244040037. The reversal of 1244040030 is 300404421.

It is an interprime number because it is at equal distance from previous prime (1244040023) and next prime (1244040037).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1244039985 and 1244040012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244040037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6911244 + ... + 6911423.

It is an arithmetic number, because the mean of its divisors is an integer number (134771013).

Almost surely, 2^1244040030 is an apocalyptic number.

1244040030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1244040030 is an abundant number, since it is smaller than the sum of its proper divisors (1990464282).

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

1244040030 is a wasteful number, since it uses less digits than its factorization.

1244040030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13822680 (or 13822677 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1244040030 is about 35270.9516457949. The cubic root of 1244040030 is about 1075.5025679669.

Adding to 1244040030 its reverse (300404421), we get a palindrome (1544444451).

The spelling of 1244040030 in words is "one billion, two hundred forty-four million, forty thousand, thirty".