190504129 has 8 divisors (see below), whose sum is σ = 191940840. Its totient is φ = 189072000.

The previous prime is 190504123. The next prime is 190504141. The reversal of 190504129 is 921405091.

It can be written as a sum of positive squares in 4 ways, for example, as 2073600 + 188430529 = 1440^2 + 13727^2 .

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 190504129 - 2³ = 190504121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190504129.

It is not an unprimeable number, because it can be changed into a prime (190504121) 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, 145779 + ... + 147079.

It is an arithmetic number, because the mean of its divisors is an integer number (23992605).

Almost surely, 2^190504129 is an apocalyptic number.

It is an amenable number.

190504129 is a deficient number, since it is larger than the sum of its proper divisors (1436711).

190504129 is a wasteful number, since it uses less digits than its factorization.

190504129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 190504129 is about 13802.3233189199. The cubic root of 190504129 is about 575.3977124989.

The spelling of 190504129 in words is "one hundred ninety million, five hundred four thousand, one hundred twenty-nine".