1240365151 has 2 divisors, whose sum is σ = 1240365152. Its totient is φ = 1240365150.

The previous prime is 1240365131. The next prime is 1240365157. The reversal of 1240365151 is 1515630421.

It is a strong prime.

It is an emirp because it is prime and its reverse (1515630421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240365151 - 2¹⁵ = 1240332383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240365157) 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, 620182575 + 620182576.

It is an arithmetic number, because the mean of its divisors is an integer number (620182576).

Almost surely, 2^1240365151 is an apocalyptic number.

1240365151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240365151 is an equidigital number, since it uses as much as digits as its factorization.

1240365151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1240365151 is about 35218.8181374674. The cubic root of 1240365151 is about 1074.4425163532.

Adding to 1240365151 its reverse (1515630421), we get a palindrome (2755995572).

The spelling of 1240365151 in words is "one billion, two hundred forty million, three hundred sixty-five thousand, one hundred fifty-one".