101990129 has 8 divisors (see below), whose sum is σ = 105672000. Its totient is φ = 98319312.

The previous prime is 101990113. The next prime is 101990131. The reversal of 101990129 is 921099101.

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 101990129 - 2⁴ = 101990113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101990095 and 101990104.

It is not an unprimeable number, because it can be changed into a prime (101990929) 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, 19052 + ... + 23810.

It is an arithmetic number, because the mean of its divisors is an integer number (13209000).

Almost surely, 2^101990129 is an apocalyptic number.

It is an amenable number.

101990129 is a deficient number, since it is larger than the sum of its proper divisors (3681871).

101990129 is an equidigital number, since it uses as much as digits as its factorization.

101990129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 101990129 is about 10099.0162392186. The cubic root of 101990129 is about 467.2178002719.

The spelling of 101990129 in words is "one hundred one million, nine hundred ninety thousand, one hundred twenty-nine".