240542247 has 16 divisors (see below), whose sum is σ = 350138880. Its totient is φ = 145675200.

The previous prime is 240542243. The next prime is 240542251. The reversal of 240542247 is 742245042.

240542247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (240542243) and next prime (240542251).

It is not a de Polignac number, because 240542247 - 2² = 240542243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240542243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86779 + ... + 89507.

It is an arithmetic number, because the mean of its divisors is an integer number (21883680).

Almost surely, 2^240542247 is an apocalyptic number.

240542247 is a deficient number, since it is larger than the sum of its proper divisors (109596633).

240542247 is a wasteful number, since it uses less digits than its factorization.

240542247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5414.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 240542247 is about 15509.4244574065. The cubic root of 240542247 is about 621.9141734605.

Adding to 240542247 its reverse (742245042), we get a palindrome (982787289).

The spelling of 240542247 in words is "two hundred forty million, five hundred forty-two thousand, two hundred forty-seven".