1042519999 has 4 divisors (see below), whose sum is σ = 1048279960. Its totient is φ = 1036760040.

The previous prime is 1042519979. The next prime is 1042520009. The reversal of 1042519999 is 9999152401.

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 1042519999 - 2⁵ = 1042519967 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 (1042519979) 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, 2879709 + ... + 2880070.

It is an arithmetic number, because the mean of its divisors is an integer number (262069990).

Almost surely, 2^1042519999 is an apocalyptic number.

1042519999 is a deficient number, since it is larger than the sum of its proper divisors (5759961).

1042519999 is an equidigital number, since it uses as much as digits as its factorization.

1042519999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759960.

The product of its (nonzero) digits is 262440, while the sum is 49.

The square root of 1042519999 is about 32288.0782797614. The cubic root of 1042519999 is about 1013.9770644896.

The spelling of 1042519999 in words is "one billion, forty-two million, five hundred nineteen thousand, nine hundred ninety-nine".