1239623042 has 64 divisors (see below), whose sum is σ = 2378833920. Its totient is φ = 472215744.

The previous prime is 1239623039. The next prime is 1239623081. The reversal of 1239623042 is 2403269321.

It is an unprimeable number.

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, 322343 + ... + 326165.

It is an arithmetic number, because the mean of its divisors is an integer number (37169280).

Almost surely, 2^1239623042 is an apocalyptic number.

1239623042 is a deficient number, since it is larger than the sum of its proper divisors (1139210878).

1239623042 is a wasteful number, since it uses less digits than its factorization.

1239623042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1239623042 is about 35208.2808725447. The cubic root of 1239623042 is about 1074.2281943765.

The spelling of 1239623042 in words is "one billion, two hundred thirty-nine million, six hundred twenty-three thousand, forty-two".