1239173001 has 48 divisors (see below), whose sum is σ = 2081064960. Its totient is φ = 703016160.

The previous prime is 1239172997. The next prime is 1239173003. The reversal of 1239173001 is 1003719321.

It is not a de Polignac number, because 1239173001 - 2² = 1239172997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1239173003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101230 + ... + 112808.

It is an arithmetic number, because the mean of its divisors is an integer number (43355520).

Almost surely, 2^1239173001 is an apocalyptic number.

1239173001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1239173001 is a deficient number, since it is larger than the sum of its proper divisors (841891959).

1239173001 is a wasteful number, since it uses less digits than its factorization.

1239173001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11666 (or 11663 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 1239173001 is about 35201.8891680546. The cubic root of 1239173001 is about 1074.0981803236.

The spelling of 1239173001 in words is "one billion, two hundred thirty-nine million, one hundred seventy-three thousand, one".