1142573643 has 24 divisors (see below), whose sum is σ = 1670423040. Its totient is φ = 752509440.

The previous prime is 1142573633. The next prime is 1142573681. The reversal of 1142573643 is 3463752411.

1142573643 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 5 + 7 + 3 + 643 = 666.

It is not a de Polignac number, because 1142573643 - 2⁸ = 1142573387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142573598 and 1142573607.

It is not an unprimeable number, because it can be changed into a prime (1142573633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374203 + ... + 377243.

It is an arithmetic number, because the mean of its divisors is an integer number (69600960).

Almost surely, 2^1142573643 is an apocalyptic number.

1142573643 is a deficient number, since it is larger than the sum of its proper divisors (527849397).

1142573643 is a wasteful number, since it uses less digits than its factorization.

1142573643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539 (or 3536 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 1142573643 is about 33801.9769096424. The cubic root of 1142573643 is about 1045.4294589462.

The spelling of 1142573643 in words is "one billion, one hundred forty-two million, five hundred seventy-three thousand, six hundred forty-three".