1042639347 has 4 divisors (see below), whose sum is σ = 1390185800. Its totient is φ = 695092896.

The previous prime is 1042639343. The next prime is 1042639369. The reversal of 1042639347 is 7439362401.

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

It is not a de Polignac number, because 1042639347 - 2² = 1042639343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042639343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173773222 + ... + 173773227.

It is an arithmetic number, because the mean of its divisors is an integer number (347546450).

Almost surely, 2^1042639347 is an apocalyptic number.

1042639347 is a deficient number, since it is larger than the sum of its proper divisors (347546453).

1042639347 is an equidigital number, since it uses as much as digits as its factorization.

1042639347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347546452.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 1042639347 is about 32289.9264012788. The cubic root of 1042639347 is about 1014.0157564786.

The spelling of 1042639347 in words is "one billion, forty-two million, six hundred thirty-nine thousand, three hundred forty-seven".