1142419999 has 4 divisors (see below), whose sum is σ = 1305622864. Its totient is φ = 979217136.

The previous prime is 1142419981. The next prime is 1142420021. The reversal of 1142419999 is 9999142411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9999142411 = 31 ⋅322552981.

It is a cyclic number.

It is not a de Polignac number, because 1142419999 - 2⁷ = 1142419871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142419969) 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, 81601422 + ... + 81601435.

It is an arithmetic number, because the mean of its divisors is an integer number (326405716).

Almost surely, 2^1142419999 is an apocalyptic number.

1142419999 is a deficient number, since it is larger than the sum of its proper divisors (163202865).

1142419999 is an equidigital number, since it uses as much as digits as its factorization.

1142419999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163202864.

The product of its digits is 209952, while the sum is 49.

The square root of 1142419999 is about 33799.7041259239. The cubic root of 1142419999 is about 1045.3825965652.

The spelling of 1142419999 in words is "one billion, one hundred forty-two million, four hundred nineteen thousand, nine hundred ninety-nine".