1240943450999 has 24 divisors (see below), whose sum is σ = 1480167108000. Its totient is φ = 1036731736320.

The previous prime is 1240943450983. The next prime is 1240943451017. The reversal of 1240943450999 is 9990543490421.

It is not a de Polignac number, because 1240943450999 - 2⁴ = 1240943450983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240943450939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1813022 + ... + 2401860.

It is an arithmetic number, because the mean of its divisors is an integer number (61673629500).

Almost surely, 2^{1240943450999} is an apocalyptic number.

1240943450999 is a deficient number, since it is larger than the sum of its proper divisors (239223657001).

1240943450999 is a wasteful number, since it uses less digits than its factorization.

1240943450999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589943 (or 589936 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 59.

The spelling of 1240943450999 in words is "one trillion, two hundred forty billion, nine hundred forty-three million, four hundred fifty thousand, nine hundred ninety-nine".