190705121 has 4 divisors (see below), whose sum is σ = 198996672. Its totient is φ = 182413572.

The previous prime is 190705111. The next prime is 190705153. The reversal of 190705121 is 121507091.

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 190705121 - 2¹⁴ = 190688737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190705111) 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, 4145741 + ... + 4145786.

It is an arithmetic number, because the mean of its divisors is an integer number (49749168).

Almost surely, 2^190705121 is an apocalyptic number.

It is an amenable number.

190705121 is a deficient number, since it is larger than the sum of its proper divisors (8291551).

190705121 is an equidigital number, since it uses as much as digits as its factorization.

190705121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291550.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 190705121 is about 13809.6024924688. The cubic root of 190705121 is about 575.5999997827.

The spelling of 190705121 in words is "one hundred ninety million, seven hundred five thousand, one hundred twenty-one".