120971539 has 4 divisors (see below), whose sum is σ = 130277056. Its totient is φ = 111666024.

The previous prime is 120971533. The next prime is 120971551. The reversal of 120971539 is 935179021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120971539 - 2⁹ = 120971027 is a prime.

It is a super-2 number, since 2×120971539² = 29268226496057042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120971498 and 120971507.

It is not an unprimeable number, because it can be changed into a prime (120971533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4652739 + ... + 4652764.

It is an arithmetic number, because the mean of its divisors is an integer number (32569264).

Almost surely, 2^120971539 is an apocalyptic number.

120971539 is a deficient number, since it is larger than the sum of its proper divisors (9305517).

120971539 is an equidigital number, since it uses as much as digits as its factorization.

120971539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9305516.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 120971539 is about 10998.7062420996. The cubic root of 120971539 is about 494.5699615058.

The spelling of 120971539 in words is "one hundred twenty million, nine hundred seventy-one thousand, five hundred thirty-nine".