1240109503 has 2 divisors, whose sum is σ = 1240109504. Its totient is φ = 1240109502.

The previous prime is 1240109491. The next prime is 1240109509. The reversal of 1240109503 is 3059010421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240109503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240109509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620054751 + 620054752.

It is an arithmetic number, because the mean of its divisors is an integer number (620054752).

Almost surely, 2^1240109503 is an apocalyptic number.

1240109503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240109503 is an equidigital number, since it uses as much as digits as its factorization.

1240109503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1240109503 is about 35215.1885271114. The cubic root of 1240109503 is about 1074.3686945560.

Adding to 1240109503 its reverse (3059010421), we get a palindrome (4299119924).

The spelling of 1240109503 in words is "one billion, two hundred forty million, one hundred nine thousand, five hundred three".