810143242 has 16 divisors (see below), whose sum is σ = 1283556960. Its totient is φ = 382437072.

The previous prime is 810143227. The next prime is 810143249. The reversal of 810143242 is 242341018.

It is not an unprimeable number, because it can be changed into a prime (810143249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25248 + ... + 47515.

It is an arithmetic number, because the mean of its divisors is an integer number (80222310).

Almost surely, 2^810143242 is an apocalyptic number.

810143242 is a deficient number, since it is larger than the sum of its proper divisors (473413718).

810143242 is a wasteful number, since it uses less digits than its factorization.

810143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73077.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 810143242 is about 28463.0153356948. The cubic root of 810143242 is about 932.2246974608.

The spelling of 810143242 in words is "eight hundred ten million, one hundred forty-three thousand, two hundred forty-two".