120240020421 has 24 divisors (see below), whose sum is σ = 174316821120. Its totient is φ = 79866506400.

The previous prime is 120240020419. The next prime is 120240020423. The reversal of 120240020421 is 124020042021.

120240020421 is a `hidden beast` number, since 1 + 2 + 0 + 240 + 0 + 2 + 0 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (120240020419) and next prime (120240020423).

It is not a de Polignac number, because 120240020421 - 2¹ = 120240020419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120240020394 and 120240020403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120240020423) 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, 3800056 + ... + 3831566.

It is an arithmetic number, because the mean of its divisors is an integer number (7263200880).

Almost surely, 2^120240020421 is an apocalyptic number.

It is an amenable number.

120240020421 is a deficient number, since it is larger than the sum of its proper divisors (54076800699).

120240020421 is a wasteful number, since it uses less digits than its factorization.

120240020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33057 (or 33054 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 120240020421 its reverse (124020042021), we get a palindrome (244260062442).

The spelling of 120240020421 in words is "one hundred twenty billion, two hundred forty million, twenty thousand, four hundred twenty-one".