240026861 has 2 divisors, whose sum is σ = 240026862. Its totient is φ = 240026860.

The previous prime is 240026851. The next prime is 240026863. The reversal of 240026861 is 168620042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194044900 + 45981961 = 13930^2 + 6781^2 .

It is a cyclic number.

It is not a de Polignac number, because 240026861 - 2⁶ = 240026797 is a prime.

It is a super-2 number, since 2×240026861² = 115225788003026642, which contains 22 as substring.

Together with 240026863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240026863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120013430 + 120013431.

It is an arithmetic number, because the mean of its divisors is an integer number (120013431).

Almost surely, 2^240026861 is an apocalyptic number.

It is an amenable number.

240026861 is a deficient number, since it is larger than the sum of its proper divisors (1).

240026861 is an equidigital number, since it uses as much as digits as its factorization.

240026861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 240026861 is about 15492.8002956212. The cubic root of 240026861 is about 621.4696845960.

The spelling of 240026861 in words is "two hundred forty million, twenty-six thousand, eight hundred sixty-one".