1142512 has 30 divisors (see below), whose sum is σ = 2555144. Its totient is φ = 484800.

The previous prime is 1142509. The next prime is 1142539. The reversal of 1142512 is 2152411.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 5 ways as a sum of consecutive naturals, for example, 11262 + ... + 11362.

2^1142512 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 1142512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277572).

1142512 is an abundant number, since it is smaller than the sum of its proper divisors (1412632).

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

1142512 is an equidigital number, since it uses as much as digits as its factorization.

1142512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 110 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 1142512 is about 1068.8835296701. The cubic root of 1142512 is about 104.5410657950.

Adding to 1142512 its reverse (2152411), we get a palindrome (3294923).

The spelling of 1142512 in words is "one million, one hundred forty-two thousand, five hundred twelve".