240442131 has 8 divisors (see below), whose sum is σ = 337462720. Its totient is φ = 151858152.

The previous prime is 240442129. The next prime is 240442159. The reversal of 240442131 is 131244042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 240442131 - 2¹ = 240442129 is a prime.

It is a super-2 number, since 2×240442131² = 115624836719642322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240442098 and 240442107.

It is not an unprimeable number, because it can be changed into a prime (240442121) 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, 2109085 + ... + 2109198.

It is an arithmetic number, because the mean of its divisors is an integer number (42182840).

Almost surely, 2^240442131 is an apocalyptic number.

240442131 is a deficient number, since it is larger than the sum of its proper divisors (97020589).

240442131 is a wasteful number, since it uses less digits than its factorization.

240442131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218305.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 240442131 is about 15506.1965355789. The cubic root of 240442131 is about 621.8278792643.

Adding to 240442131 its reverse (131244042), we get a palindrome (371686173).

The spelling of 240442131 in words is "two hundred forty million, four hundred forty-two thousand, one hundred thirty-one".