240142747 has 12 divisors (see below), whose sum is σ = 271346544. Its totient is φ = 212028960.

The previous prime is 240142739. The next prime is 240142757. The reversal of 240142747 is 747241042.

It is not a de Polignac number, because 240142747 - 2³ = 240142739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240142717) 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 11 ways as a sum of consecutive naturals, for example, 27004 + ... + 34777.

It is an arithmetic number, because the mean of its divisors is an integer number (22612212).

Almost surely, 2^240142747 is an apocalyptic number.

240142747 is a deficient number, since it is larger than the sum of its proper divisors (31203797).

240142747 is a wasteful number, since it uses less digits than its factorization.

240142747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61830 (or 61817 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 240142747 is about 15496.5398395900. The cubic root of 240142747 is about 621.5696845824.

Adding to 240142747 its reverse (747241042), we get a palindrome (987383789).

The spelling of 240142747 in words is "two hundred forty million, one hundred forty-two thousand, seven hundred forty-seven".