1211442 has 8 divisors (see below), whose sum is σ = 2422896. Its totient is φ = 403812.

The previous prime is 1211423. The next prime is 1211443. The reversal of 1211442 is 2441121.

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

1211442 is an admirable number.

It is a super-3 number, since 3×1211442³ = 5333706743069288664, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211443) 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, 100948 + ... + 100959.

It is an arithmetic number, because the mean of its divisors is an integer number (302862).

2^1211442 is an apocalyptic number.

1211442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1211442 is a wasteful number, since it uses less digits than its factorization.

1211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201912.

The product of its digits is 64, while the sum is 15.

The square root of 1211442 is about 1100.6552593796. The cubic root of 1211442 is about 106.6025374073.

Adding to 1211442 its reverse (2441121), we get a palindrome (3652563).

It can be divided in two parts, 1211 and 442, that added together give a triangular number (1653 = T₅₇).

The spelling of 1211442 in words is "one million, two hundred eleven thousand, four hundred forty-two".