1240522530423 has 16 divisors (see below), whose sum is σ = 1811054710272. Its totient is φ = 749057544000.

The previous prime is 1240522530371. The next prime is 1240522530427. The reversal of 1240522530423 is 3240352250421.

It is not a de Polignac number, because 1240522530423 - 2¹⁶ = 1240522464887 is a prime.

It is a super-2 number, since 2×1240522530423² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240522530427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69348238 + ... + 69366123.

It is an arithmetic number, because the mean of its divisors is an integer number (113190919392).

Almost surely, 2^{1240522530423} is an apocalyptic number.

1240522530423 is a deficient number, since it is larger than the sum of its proper divisors (570532179849).

1240522530423 is a wasteful number, since it uses less digits than its factorization.

1240522530423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138714646.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 1240522530423 its reverse (3240352250421), we get a palindrome (4480874780844).

The spelling of 1240522530423 in words is "one trillion, two hundred forty billion, five hundred twenty-two million, five hundred thirty thousand, four hundred twenty-three".