240442991 has 8 divisors (see below), whose sum is σ = 246074400. Its totient is φ = 234874080.

The previous prime is 240442957. The next prime is 240442999. The reversal of 240442991 is 199244042.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 240442991 - 2¹⁰ = 240441967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240442999) 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, 7796 + ... + 23273.

It is an arithmetic number, because the mean of its divisors is an integer number (30759300).

Almost surely, 2^240442991 is an apocalyptic number.

240442991 is a deficient number, since it is larger than the sum of its proper divisors (5631409).

240442991 is a wasteful number, since it uses less digits than its factorization.

240442991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31249.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 240442991 is about 15506.2242664035. The cubic root of 240442991 is about 621.8286206365.

The spelling of 240442991 in words is "two hundred forty million, four hundred forty-two thousand, nine hundred ninety-one".