1242615 has 32 divisors (see below), whose sum is σ = 2301696. Its totient is φ = 565760.

The previous prime is 1242611. The next prime is 1242617. The reversal of 1242615 is 5162421.

It is not a de Polignac number, because 1242615 - 2² = 1242611 is a prime.

1242615 is a lucky number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1242591 and 1242600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2584 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (71928).

2^1242615 is an apocalyptic number.

1242615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1242615 is a deficient number, since it is larger than the sum of its proper divisors (1059081).

1242615 is a wasteful number, since it uses less digits than its factorization.

1242615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 480, while the sum is 21.

The square root of 1242615 is about 1114.7264238368. The cubic root of 1242615 is about 107.5091753481.

The spelling of 1242615 in words is "one million, two hundred forty-two thousand, six hundred fifteen".