240442397 has 16 divisors (see below), whose sum is σ = 277724160. Its totient is φ = 206286912.

The previous prime is 240442379. The next prime is 240442399. The reversal of 240442397 is 793244042.

It is not a de Polignac number, because 240442397 - 2⁶ = 240442333 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 (240442399) 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, 3908 + ... + 22274.

It is an arithmetic number, because the mean of its divisors is an integer number (17357760).

Almost surely, 2^240442397 is an apocalyptic number.

It is an amenable number.

240442397 is a deficient number, since it is larger than the sum of its proper divisors (37281763).

240442397 is a wasteful number, since it uses less digits than its factorization.

240442397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18452.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 240442397 is about 15506.2051127927. The cubic root of 240442397 is about 621.8281085726.

The spelling of 240442397 in words is "two hundred forty million, four hundred forty-two thousand, three hundred ninety-seven".