1221042 has 16 divisors (see below), whose sum is σ = 2585952. Its totient is φ = 383040.

The previous prime is 1221029. The next prime is 1221049. The reversal of 1221042 is 2401221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5884 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (161622).

2^1221042 is an apocalyptic number.

1221042 is an abundant number, since it is smaller than the sum of its proper divisors (1364910).

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

1221042 is a wasteful number, since it uses less digits than its factorization.

1221042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11993.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1221042 is about 1105.0076922809. The cubic root of 1221042 is about 106.8833853412.

Adding to 1221042 its reverse (2401221), we get a palindrome (3622263).

The spelling of 1221042 in words is "one million, two hundred twenty-one thousand, forty-two".