1143242474 has 32 divisors (see below), whose sum is σ = 1895987520. Its totient is φ = 512697600.

The previous prime is 1143242473. The next prime is 1143242479. The reversal of 1143242474 is 4742423411.

It is a self number, because there is not a number n which added to its sum of digits gives 1143242474.

It is not an unprimeable number, because it can be changed into a prime (1143242473) 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, 527954 + ... + 530114.

It is an arithmetic number, because the mean of its divisors is an integer number (59249610).

Almost surely, 2^1143242474 is an apocalyptic number.

1143242474 is a deficient number, since it is larger than the sum of its proper divisors (752745046).

1143242474 is a wasteful number, since it uses less digits than its factorization.

1143242474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486.

The product of its digits is 21504, while the sum is 32.

The square root of 1143242474 is about 33811.8688332958. The cubic root of 1143242474 is about 1045.6334076501.

Adding to 1143242474 its reverse (4742423411), we get a palindrome (5885665885).

The spelling of 1143242474 in words is "one billion, one hundred forty-three million, two hundred forty-two thousand, four hundred seventy-four".