1142550 has 36 divisors (see below), whose sum is σ = 3070860. Its totient is φ = 304560.

The previous prime is 1142549. The next prime is 1142569. The reversal of 1142550 is 552411.

1142550 is a `hidden beast` number, since 114 + 2 + 550 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 820 + ... + 1719.

2^1142550 is an apocalyptic number.

1142550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1142550 is an abundant number, since it is smaller than the sum of its proper divisors (1928310).

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

1142550 is a wasteful number, since it uses less digits than its factorization.

1142550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1142550 is about 1068.9013050792. The cubic root of 1142550 is about 104.5422247957.

Adding to 1142550 its reverse (552411), we get a palindrome (1694961).

The spelling of 1142550 in words is "one million, one hundred forty-two thousand, five hundred fifty".