1123143202 has 4 divisors (see below), whose sum is σ = 1684714806. Its totient is φ = 561571600.

The previous prime is 1123143173. The next prime is 1123143253. The reversal of 1123143202 is 2023413211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 649689121 + 473454081 = 25489^2 + 21759^2 .

It is a super-2 number, since 2×1123143202² = 2522901304397625608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123143202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280785799 + ... + 280785802.

Almost surely, 2^1123143202 is an apocalyptic number.

1123143202 is a deficient number, since it is larger than the sum of its proper divisors (561571604).

1123143202 is an equidigital number, since it uses as much as digits as its factorization.

1123143202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561571603.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1123143202 is about 33513.3287215699. The cubic root of 1123143202 is about 1039.4694045152.

Adding to 1123143202 its reverse (2023413211), we get a palindrome (3146556413).

The spelling of 1123143202 in words is "one billion, one hundred twenty-three million, one hundred forty-three thousand, two hundred two".