1142481 has 8 divisors (see below), whose sum is σ = 1530880. Its totient is φ = 757872.

The previous prime is 1142473. The next prime is 1142483. The reversal of 1142481 is 1842411.

It is a happy number.

1142481 is nontrivially palindromic in base 2.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142481 - 2³ = 1142473 is a prime.

It is a super-2 number, since 2×1142481² = 2610525670722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142483) by changing a digit.

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, 145 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (191360).

2^1142481 is an apocalyptic number.

It is an amenable number.

1142481 is a deficient number, since it is larger than the sum of its proper divisors (388399).

1142481 is a wasteful number, since it uses less digits than its factorization.

1142481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895.

The product of its digits is 256, while the sum is 21.

The square root of 1142481 is about 1068.8690284595. The cubic root of 1142481 is about 104.5401202755.

Adding to 1142481 its reverse (1842411), we get a palindrome (2984892).

The spelling of 1142481 in words is "one million, one hundred forty-two thousand, four hundred eighty-one".