240042402 has 12 divisors (see below), whose sum is σ = 520091910. Its totient is φ = 80014128.

The previous prime is 240042389. The next prime is 240042403. The reversal of 240042402 is 204240042.

240042402 is a `hidden beast` number, since 240 + 0 + 424 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 239351841 + 690561 = 15471^2 + 831^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 13335689 = 240042402 / (2 + 4 + 0 + 0 + 4 + 2 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (240042403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6667827 + ... + 6667862.

Almost surely, 2^240042402 is an apocalyptic number.

240042402 is an abundant number, since it is smaller than the sum of its proper divisors (280049508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240042402 is a wasteful number, since it uses less digits than its factorization.

240042402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13335697 (or 13335694 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 240042402 is about 15493.3018430546. The cubic root of 240042402 is about 621.4830970559.

Adding to 240042402 its reverse (204240042), we get a palindrome (444282444).

The spelling of 240042402 in words is "two hundred forty million, forty-two thousand, four hundred two".