1020342239 has 6 divisors (see below), whose sum is σ = 1186928784. Its totient is φ = 874579020.

The previous prime is 1020342233. The next prime is 1020342241. The reversal of 1020342239 is 9322430201.

It is not a de Polignac number, because 1020342239 - 2¹⁶ = 1020276703 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 (1020342233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10411607 + ... + 10411704.

It is an arithmetic number, because the mean of its divisors is an integer number (197821464).

Almost surely, 2^1020342239 is an apocalyptic number.

1020342239 is a deficient number, since it is larger than the sum of its proper divisors (166586545).

1020342239 is an equidigital number, since it uses as much as digits as its factorization.

1020342239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20823325 (or 20823318 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1020342239 is about 31942.7963553600. The cubic root of 1020342239 is about 1006.7352804837.

The spelling of 1020342239 in words is "one billion, twenty million, three hundred forty-two thousand, two hundred thirty-nine".