299142539 has 4 divisors (see below), whose sum is σ = 303240456. Its totient is φ = 295044624.

The previous prime is 299142509. The next prime is 299142559. The reversal of 299142539 is 935241992.

It is a happy number.

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 299142539 - 2¹⁶ = 299077003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 299142539.

It is not an unprimeable number, because it can be changed into a prime (299142509) 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, 2048849 + ... + 2048994.

It is an arithmetic number, because the mean of its divisors is an integer number (75810114).

Almost surely, 2^299142539 is an apocalyptic number.

299142539 is a deficient number, since it is larger than the sum of its proper divisors (4097917).

299142539 is an equidigital number, since it uses as much as digits as its factorization.

299142539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097916.

The product of its digits is 174960, while the sum is 44.

The square root of 299142539 is about 17295.7375962981. The cubic root of 299142539 is about 668.7945496394.

The spelling of 299142539 in words is "two hundred ninety-nine million, one hundred forty-two thousand, five hundred thirty-nine".