1340403120220 has 24 divisors (see below), whose sum is σ = 2815170203664. Its totient is φ = 536099600256.

The previous prime is 1340403120127. The next prime is 1340403120229. The reversal of 1340403120220 is 220213040431.

It is a junction number, because it is equal to n+sod(n) for n = 1340403120191 and 1340403120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340403120229) 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, 3674497 + ... + 4022776.

It is an arithmetic number, because the mean of its divisors is an integer number (117298758486).

Almost surely, 2^{1340403120220} is an apocalyptic number.

1340403120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340403120220 is an abundant number, since it is smaller than the sum of its proper divisors (1474767083444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340403120220 is a wasteful number, since it uses less digits than its factorization.

1340403120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7705989 (or 7705987 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1340403120220 its reverse (220213040431), we get a palindrome (1560616160651).

The spelling of 1340403120220 in words is "one trillion, three hundred forty billion, four hundred three million, one hundred twenty thousand, two hundred twenty".