120021413 has 2 divisors, whose sum is σ = 120021414. Its totient is φ = 120021412.

The previous prime is 120021379. The next prime is 120021427. The reversal of 120021413 is 314120021.

It is an a-pointer prime, because the next prime (120021427) can be obtained adding 120021413 to its sum of digits (14).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94031809 + 25989604 = 9697^2 + 5098^2 .

It is an emirp because it is prime and its reverse (314120021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120021413 - 2²⁰ = 118972837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120021443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010706 + 60010707.

It is an arithmetic number, because the mean of its divisors is an integer number (60010707).

Almost surely, 2^120021413 is an apocalyptic number.

It is an amenable number.

120021413 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021413 is an equidigital number, since it uses as much as digits as its factorization.

120021413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 120021413 is about 10955.4284717669. The cubic root of 120021413 is about 493.2717514541.

Adding to 120021413 its reverse (314120021), we get a palindrome (434141434).

The spelling of 120021413 in words is "one hundred twenty million, twenty-one thousand, four hundred thirteen".