115142247 has 24 divisors (see below), whose sum is σ = 184154880. Its totient is φ = 68737680.

The previous prime is 115142231. The next prime is 115142257. The reversal of 115142247 is 742241511.

It is not a de Polignac number, because 115142247 - 2⁴ = 115142231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115142247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115142257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2047 + ... + 15312.

It is an arithmetic number, because the mean of its divisors is an integer number (7673120).

Almost surely, 2^115142247 is an apocalyptic number.

115142247 is a deficient number, since it is larger than the sum of its proper divisors (69012633).

115142247 is a wasteful number, since it uses less digits than its factorization.

115142247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17443 (or 17440 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 115142247 is about 10730.4355456803. The cubic root of 115142247 is about 486.4948346163.

Adding to 115142247 its reverse (742241511), we get a palindrome (857383758).

The spelling of 115142247 in words is "one hundred fifteen million, one hundred forty-two thousand, two hundred forty-seven".