191402 has 4 divisors (see below), whose sum is σ = 287106. Its totient is φ = 95700.

The previous prime is 191353. The next prime is 191413. The reversal of 191402 is 204191.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 177241 + 14161 = 421^2 + 119^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47849 + ... + 47852.

2¹⁹¹⁴⁰² is an apocalyptic number.

191402 is a deficient number, since it is larger than the sum of its proper divisors (95704).

191402 is an equidigital number, since it uses as much as digits as its factorization.

191402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95703.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 191402 is about 437.4951428302. The cubic root of 191402 is about 57.6300271038.

Adding to 191402 its reverse (204191), we get a palindrome (395593).

The spelling of 191402 in words is "one hundred ninety-one thousand, four hundred two".