240143494 has 4 divisors (see below), whose sum is σ = 360215244. Its totient is φ = 120071746.

The previous prime is 240143473. The next prime is 240143503. The reversal of 240143494 is 494341042.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60035872 + ... + 60035875.

It is an arithmetic number, because the mean of its divisors is an integer number (90053811).

Almost surely, 2^240143494 is an apocalyptic number.

240143494 is a deficient number, since it is larger than the sum of its proper divisors (120071750).

240143494 is a wasteful number, since it uses less digits than its factorization.

240143494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120071749.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 240143494 is about 15496.5639417259. The cubic root of 240143494 is about 621.5703290769.

The spelling of 240143494 in words is "two hundred forty million, one hundred forty-three thousand, four hundred ninety-four".