13420402120 has 32 divisors (see below), whose sum is σ = 30246201720. Its totient is φ = 5359219200.

The previous prime is 13420402111. The next prime is 13420402129. The reversal of 13420402120 is 2120402431.

It is an interprime number because it is at equal distance from previous prime (13420402111) and next prime (13420402129).

It can be written as a sum of positive squares in 4 ways, for example, as 8976046564 + 4444355556 = 94742^2 + 66666^2 .

It is not an unprimeable number, because it can be changed into a prime (13420402129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255087 + ... + 303166.

Almost surely, 2^13420402120 is an apocalyptic number.

13420402120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13420402120 is an abundant number, since it is smaller than the sum of its proper divisors (16825799600).

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

13420402120 is a wasteful number, since it uses less digits than its factorization.

13420402120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558865 (or 558861 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 13420402120 its reverse (2120402431), we get a palindrome (15540804551).

The spelling of 13420402120 in words is "thirteen billion, four hundred twenty million, four hundred two thousand, one hundred twenty".