1242130344 has 128 divisors (see below), whose sum is σ = 3838544640. Its totient is φ = 326172672.

The previous prime is 1242130343. The next prime is 1242130361. The reversal of 1242130344 is 4430312421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1242130343) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 560182 + ... + 562394.

It is an arithmetic number, because the mean of its divisors is an integer number (29988630).

Almost surely, 2^1242130344 is an apocalyptic number.

1242130344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242130344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1919272320).

1242130344 is an abundant number, since it is smaller than the sum of its proper divisors (2596414296).

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

1242130344 is a wasteful number, since it uses less digits than its factorization.

1242130344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2495 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1242130344 is about 35243.8695945834. The cubic root of 1242130344 is about 1074.9519629517.

Adding to 1242130344 its reverse (4430312421), we get a palindrome (5672442765).

The spelling of 1242130344 in words is "one billion, two hundred forty-two million, one hundred thirty thousand, three hundred forty-four".