20020137 has 4 divisors (see below), whose sum is σ = 26693520. Its totient is φ = 13346756.

The previous prime is 20020109. The next prime is 20020151. The reversal of 20020137 is 73102002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20020137 - 2¹⁸ = 19757993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020157) 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, 3336687 + ... + 3336692.

It is an arithmetic number, because the mean of its divisors is an integer number (6673380).

Almost surely, 2^20020137 is an apocalyptic number.

It is an amenable number.

20020137 is a deficient number, since it is larger than the sum of its proper divisors (6673383).

20020137 is an equidigital number, since it uses as much as digits as its factorization.

20020137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673382.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20020137 is about 4474.3867736261. The cubic root of 20020137 is about 271.5328314810.

Adding to 20020137 its reverse (73102002), we get a palindrome (93122139).

The spelling of 20020137 in words is "twenty million, twenty thousand, one hundred thirty-seven".