240442057 has 2 divisors, whose sum is σ = 240442058. Its totient is φ = 240442056.

The previous prime is 240442043. The next prime is 240442087. The reversal of 240442057 is 750244042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206755641 + 33686416 = 14379^2 + 5804^2 .

It is a cyclic number.

It is not a de Polignac number, because 240442057 - 2¹⁵ = 240409289 is a prime.

It is not a weakly prime, because it can be changed into another prime (240442087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120221028 + 120221029.

It is an arithmetic number, because the mean of its divisors is an integer number (120221029).

Almost surely, 2^240442057 is an apocalyptic number.

It is an amenable number.

240442057 is a deficient number, since it is larger than the sum of its proper divisors (1).

240442057 is an equidigital number, since it uses as much as digits as its factorization.

240442057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 240442057 is about 15506.1941494359. The cubic root of 240442057 is about 621.8278154717.

Adding to 240442057 its reverse (750244042), we get a palindrome (990686099).

The spelling of 240442057 in words is "two hundred forty million, four hundred forty-two thousand, fifty-seven".