1142424 has 80 divisors (see below), whose sum is σ = 3354120. Its totient is φ = 362880.

The previous prime is 1142423. The next prime is 1142431. The reversal of 1142424 is 4242411.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1142397 and 1142406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26547 + ... + 26589.

2^1142424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677060).

1142424 is an abundant number, since it is smaller than the sum of its proper divisors (2211696).

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

1142424 is a wasteful number, since it uses less digits than its factorization.

1142424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 89 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 1142424 is about 1068.8423644299. The cubic root of 1142424 is about 104.5383816948.

Adding to 1142424 its reverse (4242411), we get a palindrome (5384835).

It can be divided in two parts, 11 and 42424, that multiplied together give a palindrome (466664).

The spelling of 1142424 in words is "one million, one hundred forty-two thousand, four hundred twenty-four".