32720123 has 2 divisors, whose sum is σ = 32720124. Its totient is φ = 32720122.

The previous prime is 32720117. The next prime is 32720197. The reversal of 32720123 is 32102723.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32720123 - 2⁸ = 32719867 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 32720095 and 32720104.

It is not a weakly prime, because it can be changed into another prime (32725123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16360061 + 16360062.

It is an arithmetic number, because the mean of its divisors is an integer number (16360062).

Almost surely, 2^32720123 is an apocalyptic number.

32720123 is a deficient number, since it is larger than the sum of its proper divisors (1).

32720123 is an equidigital number, since it uses as much as digits as its factorization.

32720123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 32720123 is about 5720.1506099053. The cubic root of 32720123 is about 319.8440744255.

Adding to 32720123 its reverse (32102723), we get a palindrome (64822846).

The spelling of 32720123 in words is "thirty-two million, seven hundred twenty thousand, one hundred twenty-three".