1142456 has 32 divisors (see below), whose sum is σ = 2557440. Its totient is φ = 467808.

The previous prime is 1142431. The next prime is 1142473. The reversal of 1142456 is 6542411.

1142456 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 7 ways as a sum of consecutive naturals, for example, 845 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (79920).

2^1142456 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 1142456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1278720).

1142456 is an abundant number, since it is smaller than the sum of its proper divisors (1414984).

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

1142456 is a wasteful number, since it uses less digits than its factorization.

1142456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 919 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 1142456 is about 1068.8573337916. The cubic root of 1142456 is about 104.5393577472.

Adding to 1142456 its reverse (6542411), we get a palindrome (7684867).

The spelling of 1142456 in words is "one million, one hundred forty-two thousand, four hundred fifty-six".