1240615151 has 2 divisors, whose sum is σ = 1240615152. Its totient is φ = 1240615150.

The previous prime is 1240615141. The next prime is 1240615213. The reversal of 1240615151 is 1515160421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240615151 - 2¹⁸ = 1240353007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240615151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240615141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620307575 + 620307576.

It is an arithmetic number, because the mean of its divisors is an integer number (620307576).

Almost surely, 2^1240615151 is an apocalyptic number.

1240615151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240615151 is an equidigital number, since it uses as much as digits as its factorization.

1240615151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1240615151 is about 35222.3671975635. The cubic root of 1240615151 is about 1074.5146974052.

Adding to 1240615151 its reverse (1515160421), we get a palindrome (2755775572).

The spelling of 1240615151 in words is "one billion, two hundred forty million, six hundred fifteen thousand, one hundred fifty-one".