1240340023 has 8 divisors (see below), whose sum is σ = 1357649216. Its totient is φ = 1126159200.

The previous prime is 1240339963. The next prime is 1240340029. The reversal of 1240340023 is 3200430421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240340023 - 2¹⁷ = 1240208951 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 (1240340029) 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 7 ways as a sum of consecutive naturals, for example, 781263 + ... + 782848.

It is an arithmetic number, because the mean of its divisors is an integer number (169706152).

Almost surely, 2^1240340023 is an apocalyptic number.

1240340023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1240340023 is a deficient number, since it is larger than the sum of its proper divisors (117309193).

1240340023 is a wasteful number, since it uses less digits than its factorization.

1240340023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564185.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1240340023 is about 35218.4613945584. The cubic root of 1240340023 is about 1074.4352607549.

Adding to 1240340023 its reverse (3200430421), we get a palindrome (4440770444).

The spelling of 1240340023 in words is "one billion, two hundred forty million, three hundred forty thousand, twenty-three".