11442140 has 12 divisors (see below), whose sum is σ = 24028536. Its totient is φ = 4576848.

The previous prime is 11442127. The next prime is 11442143. The reversal of 11442140 is 4124411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11442143) 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, 286034 + ... + 286073.

It is an arithmetic number, because the mean of its divisors is an integer number (2002378).

Almost surely, 2^11442140 is an apocalyptic number.

11442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11442140 is an abundant number, since it is smaller than the sum of its proper divisors (12586396).

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

11442140 is a wasteful number, since it uses less digits than its factorization.

11442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572116 (or 572114 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 11442140 is about 3382.6232423964. The cubic root of 11442140 is about 225.3386833536.

Adding to 11442140 its reverse (4124411), we get a palindrome (15566551).

The spelling of 11442140 in words is "eleven million, four hundred forty-two thousand, one hundred forty".