1000139975 has 12 divisors (see below), whose sum is σ = 1261195320. Its totient is φ = 786549600.

The previous prime is 1000139947. The next prime is 1000139983. The reversal of 1000139975 is 5799310001.

It is not a de Polignac number, because 1000139975 - 2⁶ = 1000139911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337556 + ... + 340505.

It is an arithmetic number, because the mean of its divisors is an integer number (105099610).

Almost surely, 2^1000139975 is an apocalyptic number.

1000139975 is a deficient number, since it is larger than the sum of its proper divisors (261055345).

1000139975 is an equidigital number, since it uses as much as digits as its factorization.

1000139975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678130 (or 678125 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 1000139975 is about 31624.9897233185. The cubic root of 1000139975 is about 1000.0466561565.

Adding to 1000139975 its reverse (5799310001), we get a palindrome (6799449976).

The spelling of 1000139975 in words is "one billion, one hundred thirty-nine thousand, nine hundred seventy-five".