240420637 has 2 divisors, whose sum is σ = 240420638. Its totient is φ = 240420636.

The previous prime is 240420619. The next prime is 240420641. The reversal of 240420637 is 736024042.

240420637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212605561 + 27815076 = 14581^2 + 5274^2 .

It is a cyclic number.

It is not a de Polignac number, because 240420637 - 2²³ = 232032029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240420617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120210318 + 120210319.

It is an arithmetic number, because the mean of its divisors is an integer number (120210319).

Almost surely, 2^240420637 is an apocalyptic number.

It is an amenable number.

240420637 is a deficient number, since it is larger than the sum of its proper divisors (1).

240420637 is an equidigital number, since it uses as much as digits as its factorization.

240420637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 240420637 is about 15505.5034423265. The cubic root of 240420637 is about 621.8093495573.

Adding to 240420637 its reverse (736024042), we get a palindrome (976444679).

The spelling of 240420637 in words is "two hundred forty million, four hundred twenty thousand, six hundred thirty-seven".