1242504439 has 8 divisors (see below), whose sum is σ = 1371791232. Its totient is φ = 1115939640.

The previous prime is 1242504433. The next prime is 1242504443. The reversal of 1242504439 is 9344052421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242504439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242504433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679539 + ... + 681364.

It is an arithmetic number, because the mean of its divisors is an integer number (171473904).

Almost surely, 2^1242504439 is an apocalyptic number.

1242504439 is a deficient number, since it is larger than the sum of its proper divisors (129286793).

1242504439 is a wasteful number, since it uses less digits than its factorization.

1242504439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360997.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1242504439 is about 35249.1764300955. The cubic root of 1242504439 is about 1075.0598672987.

The spelling of 1242504439 in words is "one billion, two hundred forty-two million, five hundred four thousand, four hundred thirty-nine".