1142807428 has 24 divisors (see below), whose sum is σ = 2323087424. Its totient is φ = 481744800.

The previous prime is 1142807423. The next prime is 1142807461. The reversal of 1142807428 is 8247082411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1142807423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332838 + ... + 336253.

Almost surely, 2^1142807428 is an apocalyptic number.

It is an amenable number.

1142807428 is an abundant number, since it is smaller than the sum of its proper divisors (1180279996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142807428 is a wasteful number, since it uses less digits than its factorization.

1142807428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669163 (or 669161 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 1142807428 is about 33805.4348884909. The cubic root of 1142807428 is about 1045.5007567745.

Adding to 1142807428 its reverse (8247082411), we get a palindrome (9389889839).

The spelling of 1142807428 in words is "one billion, one hundred forty-two million, eight hundred seven thousand, four hundred twenty-eight".