1212242 has 4 divisors (see below), whose sum is σ = 1818366. Its totient is φ = 606120.

The previous prime is 1212241. The next prime is 1212251. The reversal of 1212242 is 2422121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2422121 = 13 ⋅186317.

It can be written as a sum of positive squares in only one way, i.e., 1168561 + 43681 = 1081^2 + 209^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1212241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303059 + ... + 303062.

2^1212242 is an apocalyptic number.

1212242 is a deficient number, since it is larger than the sum of its proper divisors (606124).

1212242 is an equidigital number, since it uses as much as digits as its factorization.

1212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606123.

The product of its digits is 64, while the sum is 14.

The square root of 1212242 is about 1101.0186192794. The cubic root of 1212242 is about 106.6259979511.

Adding to 1212242 its reverse (2422121), we get a palindrome (3634363).

The spelling of 1212242 in words is "one million, two hundred twelve thousand, two hundred forty-two".