1240143041 has 4 divisors (see below), whose sum is σ = 1240295892. Its totient is φ = 1239990192.

The previous prime is 1240143019. The next prime is 1240143067. The reversal of 1240143041 is 1403410421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1067982400 + 172160641 = 32680^2 + 13121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240143041 - 2¹⁸ = 1239880897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240143011) 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, 63530 + ... + 80723.

It is an arithmetic number, because the mean of its divisors is an integer number (310073973).

Almost surely, 2^1240143041 is an apocalyptic number.

It is an amenable number.

1240143041 is a deficient number, since it is larger than the sum of its proper divisors (152851).

1240143041 is an equidigital number, since it uses as much as digits as its factorization.

1240143041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152850.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1240143041 is about 35215.6647104666. The cubic root of 1240143041 is about 1074.3783796826.

Adding to 1240143041 its reverse (1403410421), we get a palindrome (2643553462).

The spelling of 1240143041 in words is "one billion, two hundred forty million, one hundred forty-three thousand, forty-one".