1242422 has 8 divisors (see below), whose sum is σ = 1895400. Its totient is φ = 610624.

The previous prime is 1242421. The next prime is 1242457. The reversal of 1242422 is 2242421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1242422² = 3087224852168, which contains 22 as substring.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1242422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242421) 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, 5147 + ... + 5382.

It is an arithmetic number, because the mean of its divisors is an integer number (236925).

2^1242422 is an apocalyptic number.

1242422 is a deficient number, since it is larger than the sum of its proper divisors (652978).

1242422 is a wasteful number, since it uses less digits than its factorization.

1242422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590.

The product of its digits is 256, while the sum is 17.

The square root of 1242422 is about 1114.6398521496. The cubic root of 1242422 is about 107.5036090369.

Adding to 1242422 its reverse (2242421), we get a palindrome (3484843).

Subtracting 1242422 from its reverse (2242421), we obtain a palindrome (999999).

The spelling of 1242422 in words is "one million, two hundred forty-two thousand, four hundred twenty-two".