20120339 has 4 divisors (see below), whose sum is σ = 20164824. Its totient is φ = 20075856.

The previous prime is 20120323. The next prime is 20120363. The reversal of 20120339 is 93302102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93302102 = 2 ⋅46651051.

It is a cyclic number.

It is not a de Polignac number, because 20120339 - 2⁴ = 20120323 is a prime.

It is a Duffinian number.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 20120339.

It is not an unprimeable number, because it can be changed into a prime (20120539) 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, 21557 + ... + 22470.

It is an arithmetic number, because the mean of its divisors is an integer number (5041206).

Almost surely, 2^20120339 is an apocalyptic number.

20120339 is a deficient number, since it is larger than the sum of its proper divisors (44485).

20120339 is an equidigital number, since it uses as much as digits as its factorization.

20120339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44484.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20120339 is about 4485.5700863993. The cubic root of 20120339 is about 271.9850905539.

The spelling of 20120339 in words is "twenty million, one hundred twenty thousand, three hundred thirty-nine".