120520381 has 2 divisors, whose sum is σ = 120520382. Its totient is φ = 120520380.

The previous prime is 120520373. The next prime is 120520409. The reversal of 120520381 is 183025021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71995225 + 48525156 = 8485^2 + 6966^2 .

It is a cyclic number.

It is not a de Polignac number, because 120520381 - 2³ = 120520373 is a prime.

It is a super-2 number, since 2×120520381² = 29050324472770322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120520321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60260190 + 60260191.

It is an arithmetic number, because the mean of its divisors is an integer number (60260191).

Almost surely, 2^120520381 is an apocalyptic number.

It is an amenable number.

120520381 is a deficient number, since it is larger than the sum of its proper divisors (1).

120520381 is an equidigital number, since it uses as much as digits as its factorization.

120520381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 120520381 is about 10978.1774899115. The cubic root of 120520381 is about 493.9543700034.

The spelling of 120520381 in words is "one hundred twenty million, five hundred twenty thousand, three hundred eighty-one".