1020246139 has 8 divisors (see below), whose sum is σ = 1119147120. Its totient is φ = 922370400.

The previous prime is 1020246127. The next prime is 1020246191. The reversal of 1020246139 is 9316420201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020246139 - 2⁷ = 1020246011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020246119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254224 + ... + 258205.

It is an arithmetic number, because the mean of its divisors is an integer number (139893390).

Almost surely, 2^1020246139 is an apocalyptic number.

1020246139 is a deficient number, since it is larger than the sum of its proper divisors (98900981).

1020246139 is a wasteful number, since it uses less digits than its factorization.

1020246139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512621.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1020246139 is about 31941.2920684183. The cubic root of 1020246139 is about 1006.7036733444.

The spelling of 1020246139 in words is "one billion, twenty million, two hundred forty-six thousand, one hundred thirty-nine".