1243142624 has 12 divisors (see below), whose sum is σ = 2447437104. Its totient is φ = 621571296.

The previous prime is 1243142609. The next prime is 1243142627. The reversal of 1243142624 is 4262413421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243142627) 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 as a sum of consecutive naturals, namely, 19424072 + ... + 19424135.

It is an arithmetic number, because the mean of its divisors is an integer number (203953092).

Almost surely, 2^1243142624 is an apocalyptic number.

It is an amenable number.

1243142624 is a deficient number, since it is larger than the sum of its proper divisors (1204294480).

1243142624 is an equidigital number, since it uses as much as digits as its factorization.

1243142624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38848217 (or 38848209 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 1243142624 is about 35258.2277489950. The cubic root of 1243142624 is about 1075.2438960578.

It can be divided in two parts, 12431 and 42624, that added together give a palindrome (55055).

The spelling of 1243142624 in words is "one billion, two hundred forty-three million, one hundred forty-two thousand, six hundred twenty-four".