1201053129 has 4 divisors (see below), whose sum is σ = 1601404176. Its totient is φ = 800702084.

The previous prime is 1201053109. The next prime is 1201053149. The reversal of 1201053129 is 9213501021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9213501021 = 3 ⋅3071167007.

It is an interprime number because it is at equal distance from previous prime (1201053109) and next prime (1201053149).

It is a cyclic number.

It is not a de Polignac number, because 1201053129 - 2¹⁵ = 1201020361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201053099 and 1201053108.

It is not an unprimeable number, because it can be changed into a prime (1201053109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200175519 + ... + 200175524.

It is an arithmetic number, because the mean of its divisors is an integer number (400351044).

Almost surely, 2^1201053129 is an apocalyptic number.

It is an amenable number.

1201053129 is a deficient number, since it is larger than the sum of its proper divisors (400351047).

1201053129 is an equidigital number, since it uses as much as digits as its factorization.

1201053129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400351046.

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

The square root of 1201053129 is about 34656.2134255894. The cubic root of 1201053129 is about 1062.9693439976.

The spelling of 1201053129 in words is "one billion, two hundred one million, fifty-three thousand, one hundred twenty-nine".