611442 has 48 divisors (see below), whose sum is σ = 1493280. Its totient is φ = 185328.

The previous prime is 611441. The next prime is 611449. The reversal of 611442 is 244116.

It is a super-2 number, since 2×611442² = 747722638728, which contains 22 as substring.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 611442.

It is not an unprimeable number, because it can be changed into a prime (611441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9093 + ... + 9159.

It is an arithmetic number, because the mean of its divisors is an integer number (31110).

2⁶¹¹⁴⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746640).

611442 is an abundant number, since it is smaller than the sum of its proper divisors (881838).

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

611442 is a wasteful number, since it uses less digits than its factorization.

611442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 85 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 611442 is about 781.9475685748. The cubic root of 611442 is about 84.8760361389.

Adding to 611442 its reverse (244116), we get a palindrome (855558).

The spelling of 611442 in words is "six hundred eleven thousand, four hundred forty-two".