1042139099 has 8 divisors (see below), whose sum is σ = 1103147760. Its totient is φ = 982802016.

The previous prime is 1042139093. The next prime is 1042139141. The reversal of 1042139099 is 9909312401.

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-1042139099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042139093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416612 + ... + 419105.

It is an arithmetic number, because the mean of its divisors is an integer number (137893470).

Almost surely, 2^1042139099 is an apocalyptic number.

1042139099 is a deficient number, since it is larger than the sum of its proper divisors (61008661).

1042139099 is an equidigital number, since it uses as much as digits as its factorization.

1042139099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835789.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 1042139099 is about 32282.1792789768. The cubic root of 1042139099 is about 1013.8535589737.

The spelling of 1042139099 in words is "one billion, forty-two million, one hundred thirty-nine thousand, ninety-nine".