20120497 has 8 divisors (see below), whose sum is σ = 20437920. Its totient is φ = 19805280.

The previous prime is 20120491. The next prime is 20120501. The reversal of 20120497 is 79402102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120497 - 2¹⁵ = 20087729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120491) 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 in 7 ways as a sum of consecutive naturals, for example, 29118 + ... + 29800.

It is an arithmetic number, because the mean of its divisors is an integer number (2554740).

Almost surely, 2^20120497 is an apocalyptic number.

It is an amenable number.

20120497 is a deficient number, since it is larger than the sum of its proper divisors (317423).

20120497 is an equidigital number, since it uses as much as digits as its factorization.

20120497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20120497 is about 4485.5876983958. The cubic root of 20120497 is about 271.9858024957.

Adding to 20120497 its reverse (79402102), we get a palindrome (99522599).

The spelling of 20120497 in words is "twenty million, one hundred twenty thousand, four hundred ninety-seven".