1201252129 has 8 divisors (see below), whose sum is σ = 1497665088. Its totient is φ = 936040560.

The previous prime is 1201252127. The next prime is 1201252177. The reversal of 1201252129 is 9212521021.

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

It is not a de Polignac number, because 1201252129 - 2¹ = 1201252127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201252127) 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, 7800262 + ... + 7800415.

It is an arithmetic number, because the mean of its divisors is an integer number (187208136).

Almost surely, 2^1201252129 is an apocalyptic number.

It is an amenable number.

1201252129 is a deficient number, since it is larger than the sum of its proper divisors (296412959).

1201252129 is a wasteful number, since it uses less digits than its factorization.

1201252129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15600695.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1201252129 is about 34659.0843647088. The cubic root of 1201252129 is about 1063.0280478170.

The spelling of 1201252129 in words is "one billion, two hundred one million, two hundred fifty-two thousand, one hundred twenty-nine".