1042242439 has 4 divisors (see below), whose sum is σ = 1191134224. Its totient is φ = 893350656.

The previous prime is 1042242431. The next prime is 1042242449. The reversal of 1042242439 is 9342422401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1042242439 - 2³ = 1042242431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042242439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042242431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74445882 + ... + 74445895.

It is an arithmetic number, because the mean of its divisors is an integer number (297783556).

Almost surely, 2^1042242439 is an apocalyptic number.

1042242439 is a deficient number, since it is larger than the sum of its proper divisors (148891785).

1042242439 is an equidigital number, since it uses as much as digits as its factorization.

1042242439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148891784.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1042242439 is about 32283.7798127790. The cubic root of 1042242439 is about 1013.8870695879.

The spelling of 1042242439 in words is "one billion, forty-two million, two hundred forty-two thousand, four hundred thirty-nine".