1242315 has 24 divisors (see below), whose sum is σ = 2268240. Its totient is φ = 627264.

The previous prime is 1242289. The next prime is 1242317. The reversal of 1242315 is 5132421.

It is not a de Polignac number, because 1242315 - 2⁶ = 1242251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242317) 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, 129 + ... + 1581.

It is an arithmetic number, because the mean of its divisors is an integer number (94510).

2^1242315 is an apocalyptic number.

1242315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1242315 is a deficient number, since it is larger than the sum of its proper divisors (1025925).

1242315 is a wasteful number, since it uses less digits than its factorization.

1242315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1480 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1242315 is about 1114.5918535500. The cubic root of 1242315 is about 107.5005228026.

Adding to 1242315 its reverse (5132421), we get a palindrome (6374736).

The spelling of 1242315 in words is "one million, two hundred forty-two thousand, three hundred fifteen".