1142544 has 40 divisors (see below), whose sum is σ = 3180352. Its totient is φ = 351360.

The previous prime is 1142539. The next prime is 1142549. The reversal of 1142544 is 4452411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1142539) and next prime (1142549).

It is a self number, because there is not a number n which added to its sum of digits gives 1142544.

It is not an unprimeable number, because it can be changed into a prime (1142549) 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, 292 + ... + 1539.

2^1142544 is an apocalyptic number.

It is an amenable number.

1142544 is an abundant number, since it is smaller than the sum of its proper divisors (2037808).

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

1142544 is a wasteful number, since it uses less digits than its factorization.

1142544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1849 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 1142544 is about 1068.8984984553. The cubic root of 1142544 is about 104.5420417973.

Adding to 1142544 its reverse (4452411), we get a palindrome (5594955).

The spelling of 1142544 in words is "one million, one hundred forty-two thousand, five hundred forty-four".