18202042 has 8 divisors (see below), whose sum is σ = 27352116. Its totient is φ = 9084672.

The previous prime is 18202033. The next prime is 18202043. The reversal of 18202042 is 24020281.

It can be written as a sum of positive squares in 2 ways, for example, as 15515721 + 2686321 = 3939^2 + 1639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18202043) 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, 6733 + ... + 9040.

Almost surely, 2^18202042 is an apocalyptic number.

18202042 is a deficient number, since it is larger than the sum of its proper divisors (9150074).

18202042 is a wasteful number, since it uses less digits than its factorization.

18202042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16352.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 18202042 is about 4266.3851209191. The cubic root of 18202042 is about 263.0510486093.

The spelling of 18202042 in words is "eighteen million, two hundred two thousand, forty-two".