1143202541 has 4 divisors (see below), whose sum is σ = 1231141212. Its totient is φ = 1055263872.

The previous prime is 1143202493. The next prime is 1143202559. The reversal of 1143202541 is 1452023411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1452023411 = 739 ⋅1964849.

It can be written as a sum of positive squares in 2 ways, for example, as 506700100 + 636502441 = 22510^2 + 25229^2 .

It is not a de Polignac number, because 1143202541 - 2⁶ = 1143202477 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 (1143201541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43969316 + ... + 43969341.

It is an arithmetic number, because the mean of its divisors is an integer number (307785303).

Almost surely, 2^1143202541 is an apocalyptic number.

It is an amenable number.

1143202541 is a deficient number, since it is larger than the sum of its proper divisors (87938671).

1143202541 is an equidigital number, since it uses as much as digits as its factorization.

1143202541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87938670.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1143202541 is about 33811.2783106466. The cubic root of 1143202541 is about 1045.6212329902.

Adding to 1143202541 its reverse (1452023411), we get a palindrome (2595225952).

The spelling of 1143202541 in words is "one billion, one hundred forty-three million, two hundred two thousand, five hundred forty-one".