115242487 has 2 divisors, whose sum is σ = 115242488. Its totient is φ = 115242486.

The previous prime is 115242461. The next prime is 115242509. The reversal of 115242487 is 784242511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115242487 - 2¹⁹ = 114718199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115242427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57621243 + 57621244.

It is an arithmetic number, because the mean of its divisors is an integer number (57621244).

Almost surely, 2^115242487 is an apocalyptic number.

115242487 is a deficient number, since it is larger than the sum of its proper divisors (1).

115242487 is an equidigital number, since it uses as much as digits as its factorization.

115242487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 34.

The square root of 115242487 is about 10735.1053557941. The cubic root of 115242487 is about 486.6359704686.

Adding to 115242487 its reverse (784242511), we get a palindrome (899484998).

It can be divided in two parts, 1152424 and 87, that added together give a palindrome (1152511).

The spelling of 115242487 in words is "one hundred fifteen million, two hundred forty-two thousand, four hundred eighty-seven".