1143040253 has 8 divisors (see below), whose sum is σ = 1152001920. Its totient is φ = 1134097200.

The previous prime is 1143040231. The next prime is 1143040267. The reversal of 1143040253 is 3520403411.

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

It is a cyclic number.

It is not a de Polignac number, because 1143040253 - 2²² = 1138845949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143040553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134651 + ... + 142887.

It is an arithmetic number, because the mean of its divisors is an integer number (144000240).

Almost surely, 2^1143040253 is an apocalyptic number.

It is an amenable number.

1143040253 is a deficient number, since it is larger than the sum of its proper divisors (8961667).

1143040253 is an equidigital number, since it uses as much as digits as its factorization.

1143040253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9307.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1143040253 is about 33808.8783162056. The cubic root of 1143040253 is about 1045.5717521668.

Adding to 1143040253 its reverse (3520403411), we get a palindrome (4663443664).

The spelling of 1143040253 in words is "one billion, one hundred forty-three million, forty thousand, two hundred fifty-three".