1240245423 has 12 divisors (see below), whose sum is σ = 1791807888. Its totient is φ = 826672320.

The previous prime is 1240245403. The next prime is 1240245437. The reversal of 1240245423 is 3245420421.

It is not a de Polignac number, because 1240245423 - 2⁶ = 1240245359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240245403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55303 + ... + 74423.

It is an arithmetic number, because the mean of its divisors is an integer number (149317324).

Almost surely, 2^1240245423 is an apocalyptic number.

1240245423 is a deficient number, since it is larger than the sum of its proper divisors (551562465).

1240245423 is a wasteful number, since it uses less digits than its factorization.

1240245423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26334 (or 26331 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1240245423 is about 35217.1183233382. The cubic root of 1240245423 is about 1074.4079445464.

Adding to 1240245423 its reverse (3245420421), we get a palindrome (4485665844).

The spelling of 1240245423 in words is "one billion, two hundred forty million, two hundred forty-five thousand, four hundred twenty-three".