200156129 has 2 divisors, whose sum is σ = 200156130. Its totient is φ = 200156128.

The previous prime is 200156123. The next prime is 200156141. The reversal of 200156129 is 921651002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158256400 + 41899729 = 12580^2 + 6473^2 .

It is a cyclic number.

It is not a de Polignac number, because 200156129 - 2⁸ = 200155873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200156098 and 200156107.

It is not a weakly prime, because it can be changed into another prime (200156123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100078064 + 100078065.

It is an arithmetic number, because the mean of its divisors is an integer number (100078065).

Almost surely, 2^200156129 is an apocalyptic number.

It is an amenable number.

200156129 is a deficient number, since it is larger than the sum of its proper divisors (1).

200156129 is an equidigital number, since it uses as much as digits as its factorization.

200156129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 200156129 is about 14147.6545405944. The cubic root of 200156129 is about 584.9556827168.

The spelling of 200156129 in words is "two hundred million, one hundred fifty-six thousand, one hundred twenty-nine".