190342261 has 4 divisors (see below), whose sum is σ = 190417612. Its totient is φ = 190266912.

The previous prime is 190342241. The next prime is 190342289. The reversal of 190342261 is 162243091.

190342261 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 an emirpimes, since its reverse is a distinct semiprime: 162243091 = 9007 ⋅18013.

It can be written as a sum of positive squares in 2 ways, for example, as 181306225 + 9036036 = 13465^2 + 3006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190342261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190342211) 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, 33750 + ... + 38983.

It is an arithmetic number, because the mean of its divisors is an integer number (47604403).

Almost surely, 2^190342261 is an apocalyptic number.

It is an amenable number.

190342261 is a deficient number, since it is larger than the sum of its proper divisors (75351).

190342261 is an equidigital number, since it uses as much as digits as its factorization.

190342261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75350.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 190342261 is about 13796.4582773986. The cubic root of 190342261 is about 575.2346978891.

The spelling of 190342261 in words is "one hundred ninety million, three hundred forty-two thousand, two hundred sixty-one".