1240233120023 has 4 divisors (see below), whose sum is σ = 1257701192208. Its totient is φ = 1222765047840.

The previous prime is 1240233120017. The next prime is 1240233120067. The reversal of 1240233120023 is 3200213320421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240233120023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240233020023) 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, 8734035986 + ... + 8734036127.

It is an arithmetic number, because the mean of its divisors is an integer number (314425298052).

Almost surely, 2^{1240233120023} is an apocalyptic number.

1240233120023 is a deficient number, since it is larger than the sum of its proper divisors (17468072185).

1240233120023 is an equidigital number, since it uses as much as digits as its factorization.

1240233120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17468072184.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1240233120023 its reverse (3200213320421), we get a palindrome (4440446440444).

The spelling of 1240233120023 in words is "one trillion, two hundred forty billion, two hundred thirty-three million, one hundred twenty thousand, twenty-three".