1200125139 has 8 divisors (see below), whose sum is σ = 1684386240. Its totient is φ = 757973736.

The previous prime is 1200125131. The next prime is 1200125159. The reversal of 1200125139 is 9315210021.

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

It is not a de Polignac number, because 1200125139 - 2³ = 1200125131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200125131) 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, 10527357 + ... + 10527470.

It is an arithmetic number, because the mean of its divisors is an integer number (210548280).

Almost surely, 2^1200125139 is an apocalyptic number.

1200125139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1200125139 is a deficient number, since it is larger than the sum of its proper divisors (484261101).

1200125139 is a wasteful number, since it uses less digits than its factorization.

1200125139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21054849.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1200125139 is about 34642.8223301740. The cubic root of 1200125139 is about 1062.6955067961.

The spelling of 1200125139 in words is "one billion, two hundred million, one hundred twenty-five thousand, one hundred thirty-nine".