120555439 has 2 divisors, whose sum is σ = 120555440. Its totient is φ = 120555438.

The previous prime is 120555377. The next prime is 120555451. The reversal of 120555439 is 934555021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120555439 - 2¹³ = 120547247 is a prime.

It is a super-3 number, since 3×120555439³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120555469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60277719 + 60277720.

It is an arithmetic number, because the mean of its divisors is an integer number (60277720).

Almost surely, 2^120555439 is an apocalyptic number.

120555439 is a deficient number, since it is larger than the sum of its proper divisors (1).

120555439 is an equidigital number, since it uses as much as digits as its factorization.

120555439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 120555439 is about 10979.7740869291. The cubic root of 120555439 is about 494.0022605851.

It can be divided in two parts, 1205 and 55439, that added together give a square (56644 = 238²).

The spelling of 120555439 in words is "one hundred twenty million, five hundred fifty-five thousand, four hundred thirty-nine".