1240523533 has 2 divisors, whose sum is σ = 1240523534. Its totient is φ = 1240523532.

The previous prime is 1240523527. The next prime is 1240523539. The reversal of 1240523533 is 3353250421.

It is a balanced prime because it is at equal distance from previous prime (1240523527) and next prime (1240523539).

It can be written as a sum of positive squares in only one way, i.e., 1098127044 + 142396489 = 33138^2 + 11933^2 .

It is an emirp because it is prime and its reverse (3353250421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240523533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240523539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620261766 + 620261767.

It is an arithmetic number, because the mean of its divisors is an integer number (620261767).

Almost surely, 2^1240523533 is an apocalyptic number.

It is an amenable number.

1240523533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240523533 is an equidigital number, since it uses as much as digits as its factorization.

1240523533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 1240523533 is about 35221.0666079266. The cubic root of 1240523533 is about 1074.4882461965.

Adding to 1240523533 its reverse (3353250421), we get a palindrome (4593773954).

The spelling of 1240523533 in words is "one billion, two hundred forty million, five hundred twenty-three thousand, five hundred thirty-three".