190427 has 4 divisors (see below), whose sum is σ = 191616. Its totient is φ = 189240.

The previous prime is 190409. The next prime is 190471. The reversal of 190427 is 724091.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 724091 = 367 ⋅1973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190427 is a prime.

It is a d-powerful number, because it can be written as 1 + 9⁵ + 4⁴ + 0 + 2¹⁷ + 7² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308 + ... + 689.

It is an arithmetic number, because the mean of its divisors is an integer number (47904).

2¹⁹⁰⁴²⁷ is an apocalyptic number.

190427 is a deficient number, since it is larger than the sum of its proper divisors (1189).

190427 is an equidigital number, since it uses as much as digits as its factorization.

190427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 190427 is about 436.3794220630. The cubic root of 190427 is about 57.5320048669.

The spelling of 190427 in words is "one hundred ninety thousand, four hundred twenty-seven".