1143402 has 32 divisors (see below), whose sum is σ = 2503872. Its totient is φ = 345984.

The previous prime is 1143391. The next prime is 1143407. The reversal of 1143402 is 2043411.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1143407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8278 + ... + 8414.

It is an arithmetic number, because the mean of its divisors is an integer number (78246).

2^1143402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251936).

1143402 is an abundant number, since it is smaller than the sum of its proper divisors (1360470).

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

1143402 is a wasteful number, since it uses less digits than its factorization.

1143402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1143402 is about 1069.2997708781. The cubic root of 1143402 is about 104.5682040657.

Adding to 1143402 its reverse (2043411), we get a palindrome (3186813).

Subtracting 1143402 from its reverse (2043411), we obtain a palindrome (900009).

The spelling of 1143402 in words is "one million, one hundred forty-three thousand, four hundred two".