196720129 has 4 divisors (see below), whose sum is σ = 207073840. Its totient is φ = 186366420.

The previous prime is 196720123. The next prime is 196720133. The reversal of 196720129 is 921027691.

196720129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 196720129 - 2¹³ = 196711937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196720123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5176827 + ... + 5176864.

It is an arithmetic number, because the mean of its divisors is an integer number (51768460).

Almost surely, 2^196720129 is an apocalyptic number.

196720129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

196720129 is a deficient number, since it is larger than the sum of its proper divisors (10353711).

196720129 is a wasteful number, since it uses less digits than its factorization.

196720129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10353710.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 196720129 is about 14025.6953125326. The cubic root of 196720129 is about 581.5891111867.

The spelling of 196720129 in words is "one hundred ninety-six million, seven hundred twenty thousand, one hundred twenty-nine".