240115261 has 2 divisors, whose sum is σ = 240115262. Its totient is φ = 240115260.

The previous prime is 240115241. The next prime is 240115277. The reversal of 240115261 is 162511042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192932100 + 47183161 = 13890^2 + 6869^2 .

It is a cyclic number.

It is not a de Polignac number, because 240115261 - 2¹¹ = 240113213 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 (240115201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120057630 + 120057631.

It is an arithmetic number, because the mean of its divisors is an integer number (120057631).

Almost surely, 2^240115261 is an apocalyptic number.

It is an amenable number.

240115261 is a deficient number, since it is larger than the sum of its proper divisors (1).

240115261 is an equidigital number, since it uses as much as digits as its factorization.

240115261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 240115261 is about 15495.6529710755. The cubic root of 240115261 is about 621.5459693597.

The spelling of 240115261 in words is "two hundred forty million, one hundred fifteen thousand, two hundred sixty-one".