1240383840421 has 8 divisors (see below), whose sum is σ = 1353210110784. Its totient is φ = 1127568253920.

The previous prime is 1240383840413. The next prime is 1240383840529. The reversal of 1240383840421 is 1240483830421.

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 1240383840421 - 2³ = 1240383840413 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 (1240383840721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2427241 + ... + 2893486.

It is an arithmetic number, because the mean of its divisors is an integer number (169151263848).

Almost surely, 2^{1240383840421} is an apocalyptic number.

1240383840421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1240383840421 is a deficient number, since it is larger than the sum of its proper divisors (112826270363).

1240383840421 is a wasteful number, since it uses less digits than its factorization.

1240383840421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341931.

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 1240383840421 in words is "one trillion, two hundred forty billion, three hundred eighty-three million, eight hundred forty thousand, four hundred twenty-one".