120123013421 has 16 divisors (see below), whose sum is σ = 128384414208. Its totient is φ = 111995520000.

The previous prime is 120123013349. The next prime is 120123013453. The reversal of 120123013421 is 124310321021.

It is a cyclic number.

It is not a de Polignac number, because 120123013421 - 2¹⁴ = 120122997037 is a prime.

It is a super-2 number, since 2×120123013421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120123013393 and 120123013402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120123013921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3731846 + ... + 3763896.

It is an arithmetic number, because the mean of its divisors is an integer number (8024025888).

Almost surely, 2^120123013421 is an apocalyptic number.

It is an amenable number.

120123013421 is a deficient number, since it is larger than the sum of its proper divisors (8261400787).

120123013421 is a wasteful number, since it uses less digits than its factorization.

120123013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34132.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 120123013421 its reverse (124310321021), we get a palindrome (244433334442).

The spelling of 120123013421 in words is "one hundred twenty billion, one hundred twenty-three million, thirteen thousand, four hundred twenty-one".