1242213 has 16 divisors (see below), whose sum is σ = 1910400. Its totient is φ = 703296.

The previous prime is 1242193. The next prime is 1242217. The reversal of 1242213 is 3122421.

It is not a de Polignac number, because 1242213 - 2⁵ = 1242181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242192 and 1242201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2931 + ... + 3327.

It is an arithmetic number, because the mean of its divisors is an integer number (119400).

2^1242213 is an apocalyptic number.

It is an amenable number.

1242213 is a deficient number, since it is larger than the sum of its proper divisors (668187).

1242213 is a wasteful number, since it uses less digits than its factorization.

1242213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556.

The product of its digits is 96, while the sum is 15.

The square root of 1242213 is about 1114.5460959512. The cubic root of 1242213 is about 107.4975806198.

Adding to 1242213 its reverse (3122421), we get a palindrome (4364634).

The spelling of 1242213 in words is "one million, two hundred forty-two thousand, two hundred thirteen".