190402 has 16 divisors (see below), whose sum is σ = 306432. Its totient is φ = 88560.

The previous prime is 190391. The next prime is 190403. The reversal of 190402 is 204091.

It is not an unprimeable number, because it can be changed into a prime (190403) by changing a digit.

190402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2253 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2¹⁹⁰⁴⁰² is an apocalyptic number.

190402 is a deficient number, since it is larger than the sum of its proper divisors (116030).

190402 is a wasteful number, since it uses less digits than its factorization.

190402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 190402 is about 436.3507763257. The cubic root of 190402 is about 57.5294870813.

Adding to 190402 its reverse (204091), we get a palindrome (394493).

Subtracting 190402 from its reverse (204091), we obtain a square (13689 = 117²).

The spelling of 190402 in words is "one hundred ninety thousand, four hundred two".