1242115 has 16 divisors (see below), whose sum is σ = 1778688. Its totient is φ = 814176.

The previous prime is 1242107. The next prime is 1242119. The reversal of 1242115 is 5112421.

It is a cyclic number.

It is not a de Polignac number, because 1242115 - 2³ = 1242107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34 + ... + 1576.

It is an arithmetic number, because the mean of its divisors is an integer number (111168).

2^1242115 is an apocalyptic number.

1242115 is a deficient number, since it is larger than the sum of its proper divisors (536573).

1242115 is a wasteful number, since it uses less digits than its factorization.

1242115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578.

The product of its digits is 80, while the sum is 16.

The square root of 1242115 is about 1114.5021309984. The cubic root of 1242115 is about 107.4947536650.

Adding to 1242115 its reverse (5112421), we get a palindrome (6354536).

It can be divided in two parts, 124211 and 5, that multiplied together give a triangular number (621055 = T₁₁₁₄).

The spelling of 1242115 in words is "one million, two hundred forty-two thousand, one hundred fifteen".