1222542 has 24 divisors (see below), whose sum is σ = 2764944. Its totient is φ = 389664.

The previous prime is 1222537. The next prime is 1222561. The reversal of 1222542 is 2452221.

1222542 is a `hidden beast` number, since 122 + 2 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1063 + ... + 1890.

It is an arithmetic number, because the mean of its divisors is an integer number (115206).

2^1222542 is an apocalyptic number.

1222542 is an abundant number, since it is smaller than the sum of its proper divisors (1542402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222542 is a wasteful number, since it uses less digits than its factorization.

1222542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984 (or 2981 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 1222542 is about 1105.6862122682. The cubic root of 1222542 is about 106.9271347159.

Adding to 1222542 its reverse (2452221), we get a palindrome (3674763).

It can be divided in two parts, 1222 and 542, that added together give a square (1764 = 42²).

The spelling of 1222542 in words is "one million, two hundred twenty-two thousand, five hundred forty-two".