1143642 has 8 divisors (see below), whose sum is σ = 2287296. Its totient is φ = 381212.

The previous prime is 1143619. The next prime is 1143643. The reversal of 1143642 is 2463411.

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

1143642 is an admirable number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1143643) 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 3 ways as a sum of consecutive naturals, for example, 95298 + ... + 95309.

It is an arithmetic number, because the mean of its divisors is an integer number (285912).

2^1143642 is an apocalyptic number.

1143642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1143642 is a wasteful number, since it uses less digits than its factorization.

1143642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190612.

The product of its digits is 576, while the sum is 21.

The square root of 1143642 is about 1069.4119879635. The cubic root of 1143642 is about 104.5755198401.

The spelling of 1143642 in words is "one million, one hundred forty-three thousand, six hundred forty-two".