1242113 has 4 divisors (see below), whose sum is σ = 1260720. Its totient is φ = 1223508.

The previous prime is 1242107. The next prime is 1242119. The reversal of 1242113 is 3112421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3112421 = 13 ⋅239417.

It is an interprime number because it is at equal distance from previous prime (1242107) and next prime (1242119).

It is a cyclic number.

It is not a de Polignac number, because 1242113 - 2⁴ = 1242097 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 3 ways as a sum of consecutive naturals, for example, 9203 + ... + 9336.

It is an arithmetic number, because the mean of its divisors is an integer number (315180).

2^1242113 is an apocalyptic number.

It is an amenable number.

1242113 is a deficient number, since it is larger than the sum of its proper divisors (18607).

1242113 is an equidigital number, since it uses as much as digits as its factorization.

1242113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18606.

The product of its digits is 48, while the sum is 14.

The square root of 1242113 is about 1114.5012337364. The cubic root of 1242113 is about 107.4946959705.

Adding to 1242113 its reverse (3112421), we get a palindrome (4354534).

The spelling of 1242113 in words is "one million, two hundred forty-two thousand, one hundred thirteen".