7142399999 has 4 divisors (see below), whose sum is σ = 8162742864. Its totient is φ = 6122057136.

The previous prime is 7142399989. The next prime is 7142400017. The reversal of 7142399999 is 9999932417.

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 7142399999 - 2⁸ = 7142399743 is a prime.

It is a Duffinian number.

7142399999 is a modest number, since divided by 99999 gives 71423 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142399909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510171422 + ... + 510171435.

It is an arithmetic number, because the mean of its divisors is an integer number (2040685716).

Almost surely, 2^7142399999 is an apocalyptic number.

7142399999 is a deficient number, since it is larger than the sum of its proper divisors (1020342865).

7142399999 is a wasteful number, since it uses less digits than its factorization.

7142399999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020342864.

The product of its digits is 9920232, while the sum is 62.

The square root of 7142399999 is about 84512.7209300470. The cubic root of 7142399999 is about 1925.8156996430.

The spelling of 7142399999 in words is "seven billion, one hundred forty-two million, three hundred ninety-nine thousand, nine hundred ninety-nine".