120900139 has 2 divisors, whose sum is σ = 120900140. Its totient is φ = 120900138.

The previous prime is 120900137. The next prime is 120900179. The reversal of 120900139 is 931009021.

It is a weak prime.

It is an emirp because it is prime and its reverse (931009021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120900139 - 2¹ = 120900137 is a prime.

It is a super-3 number, since 3×120900139³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 120900137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120900137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60450069 + 60450070.

It is an arithmetic number, because the mean of its divisors is an integer number (60450070).

Almost surely, 2^120900139 is an apocalyptic number.

120900139 is a deficient number, since it is larger than the sum of its proper divisors (1).

120900139 is an equidigital number, since it uses as much as digits as its factorization.

120900139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 120900139 is about 10995.4599267152. The cubic root of 120900139 is about 494.4726404191.

The spelling of 120900139 in words is "one hundred twenty million, nine hundred thousand, one hundred thirty-nine".