201770129 has 8 divisors (see below), whose sum is σ = 220819872. Its totient is φ = 182838240.

The previous prime is 201770119. The next prime is 201770131. The reversal of 201770129 is 921077102.

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

It is a cyclic number.

It is not a de Polignac number, because 201770129 - 2¹⁶ = 201704593 is a prime.

It is a super-2 number, since 2×201770129² = 81422369913353282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201770119) 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, 25859 + ... + 32744.

It is an arithmetic number, because the mean of its divisors is an integer number (27602484).

Almost surely, 2^201770129 is an apocalyptic number.

It is an amenable number.

201770129 is a deficient number, since it is larger than the sum of its proper divisors (19049743).

201770129 is a wasteful number, since it uses less digits than its factorization.

201770129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58927.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 201770129 is about 14204.5812680276. The cubic root of 201770129 is about 586.5237787271.

The spelling of 201770129 in words is "two hundred one million, seven hundred seventy thousand, one hundred twenty-nine".