190244842 has 4 divisors (see below), whose sum is σ = 285367266. Its totient is φ = 95122420.

The previous prime is 190244837. The next prime is 190244849. The reversal of 190244842 is 248442091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248442091 = 31 ⋅8014261.

It can be written as a sum of positive squares in only one way, i.e., 159542161 + 30702681 = 12631^2 + 5541^2 .

It is a junction number, because it is equal to n+sod(n) for n = 190244798 and 190244807.

It is not an unprimeable number, because it can be changed into a prime (190244849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47561209 + ... + 47561212.

Almost surely, 2^190244842 is an apocalyptic number.

190244842 is a deficient number, since it is larger than the sum of its proper divisors (95122424).

190244842 is an equidigital number, since it uses as much as digits as its factorization.

190244842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95122423.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 190244842 is about 13792.9272455125. The cubic root of 190244842 is about 575.1365442581.

The spelling of 190244842 in words is "one hundred ninety million, two hundred forty-four thousand, eight hundred forty-two".