814664042 has 8 divisors (see below), whose sum is σ = 1222587300. Its totient is φ = 407134944.

The previous prime is 814664041. The next prime is 814664077. The reversal of 814664042 is 240466418.

It can be written as a sum of positive squares in 2 ways, for example, as 805367641 + 9296401 = 28379^2 + 3049^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 814663993 and 814664011.

It is not an unprimeable number, because it can be changed into a prime (814664041) 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, 93317 + ... + 101672.

Almost surely, 2^814664042 is an apocalyptic number.

814664042 is a deficient number, since it is larger than the sum of its proper divisors (407923258).

814664042 is a wasteful number, since it uses less digits than its factorization.

814664042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197080.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 814664042 is about 28542.3201930046. The cubic root of 814664042 is about 933.9554969342.

The spelling of 814664042 in words is "eight hundred fourteen million, six hundred sixty-four thousand, forty-two".