1143202402 has 4 divisors (see below), whose sum is σ = 1714803606. Its totient is φ = 571601200.

The previous prime is 1143202399. The next prime is 1143202433. The reversal of 1143202402 is 2042023411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2042023411 = 1559 ⋅1309829.

It can be written as a sum of positive squares in only one way, i.e., 778354201 + 364848201 = 27899^2 + 19101^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1143202402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285800599 + ... + 285800602.

Almost surely, 2^1143202402 is an apocalyptic number.

1143202402 is a deficient number, since it is larger than the sum of its proper divisors (571601204).

1143202402 is an equidigital number, since it uses as much as digits as its factorization.

1143202402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571601203.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1143202402 is about 33811.2762551194. The cubic root of 1143202402 is about 1045.6211906118.

Adding to 1143202402 its reverse (2042023411), we get a palindrome (3185225813).

The spelling of 1143202402 in words is "one billion, one hundred forty-three million, two hundred two thousand, four hundred two".