20120459 has 2 divisors, whose sum is σ = 20120460. Its totient is φ = 20120458.

The previous prime is 20120453. The next prime is 20120467. The reversal of 20120459 is 95402102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20120459 - 2⁸ = 20120203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20120453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060229 + 10060230.

It is an arithmetic number, because the mean of its divisors is an integer number (10060230).

Almost surely, 2^20120459 is an apocalyptic number.

20120459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120459 is an equidigital number, since it uses as much as digits as its factorization.

20120459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 20120459 is about 4485.5834626055. The cubic root of 20120459 is about 271.9856312695.

The spelling of 20120459 in words is "twenty million, one hundred twenty thousand, four hundred fifty-nine".