1242503115 has 64 divisors (see below), whose sum is σ = 2395008000. Its totient is φ = 537997824.

The previous prime is 1242503077. The next prime is 1242503117. The reversal of 1242503115 is 5113052421.

It is a happy number.

It is not a de Polignac number, because 1242503115 - 2¹³ = 1242494923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242503117) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 157536 + ... + 165234.

It is an arithmetic number, because the mean of its divisors is an integer number (37422000).

Almost surely, 2^1242503115 is an apocalyptic number.

1242503115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1242503115 is a deficient number, since it is larger than the sum of its proper divisors (1152504885).

1242503115 is a wasteful number, since it uses less digits than its factorization.

1242503115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1242503115 is about 35249.1576495099. The cubic root of 1242503115 is about 1075.0594854409.

Adding to 1242503115 its reverse (5113052421), we get a palindrome (6355555536).

The spelling of 1242503115 in words is "one billion, two hundred forty-two million, five hundred three thousand, one hundred fifteen".