1042543240 has 16 divisors (see below), whose sum is σ = 2345722380. Its totient is φ = 417017280.

The previous prime is 1042543211. The next prime is 1042543277. The reversal of 1042543240 is 423452401.

It is a happy number.

1042543240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 921851044 + 120692196 = 30362^2 + 10986^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13031751 + ... + 13031830.

Almost surely, 2^1042543240 is an apocalyptic number.

1042543240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042543240 is an abundant number, since it is smaller than the sum of its proper divisors (1303179140).

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

1042543240 is a wasteful number, since it uses less digits than its factorization.

1042543240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26063592 (or 26063588 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1042543240 is about 32288.4381783944. The cubic root of 1042543240 is about 1013.9845993301.

Adding to 1042543240 its reverse (423452401), we get a palindrome (1465995641).

The spelling of 1042543240 in words is "one billion, forty-two million, five hundred forty-three thousand, two hundred forty".