1240500043 has 2 divisors, whose sum is σ = 1240500044. Its totient is φ = 1240500042.

The previous prime is 1240500031. The next prime is 1240500083. The reversal of 1240500043 is 3400050421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240500043 - 2¹³ = 1240491851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240500083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620250021 + 620250022.

It is an arithmetic number, because the mean of its divisors is an integer number (620250022).

Almost surely, 2^1240500043 is an apocalyptic number.

1240500043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240500043 is an equidigital number, since it uses as much as digits as its factorization.

1240500043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1240500043 is about 35220.7331411486. The cubic root of 1240500043 is about 1074.4814641437.

Adding to 1240500043 its reverse (3400050421), we get a palindrome (4640550464).

The spelling of 1240500043 in words is "one billion, two hundred forty million, five hundred thousand, forty-three".