818432042 has 8 divisors (see below), whose sum is σ = 1250811396. Its totient is φ = 401494912.

The previous prime is 818431967. The next prime is 818432047. The reversal of 818432042 is 240234818.

It can be written as a sum of positive squares in 2 ways, for example, as 786746401 + 31685641 = 28049^2 + 5629^2 .

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 (818432047) 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, 3860423 + ... + 3860634.

Almost surely, 2^818432042 is an apocalyptic number.

818432042 is a deficient number, since it is larger than the sum of its proper divisors (432379354).

818432042 is a wasteful number, since it uses less digits than its factorization.

818432042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7721112.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 818432042 is about 28608.2512922408. The cubic root of 818432042 is about 935.3931990318.

The spelling of 818432042 in words is "eight hundred eighteen million, four hundred thirty-two thousand, forty-two".