20010423 has 8 divisors (see below), whose sum is σ = 26945136. Its totient is φ = 13208000.

The previous prime is 20010409. The next prime is 20010443. The reversal of 20010423 is 32401002.

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 20010423 - 2⁶ = 20010359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010399 and 20010408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32718 + ... + 33323.

It is an arithmetic number, because the mean of its divisors is an integer number (3368142).

Almost surely, 2^20010423 is an apocalyptic number.

20010423 is a deficient number, since it is larger than the sum of its proper divisors (6934713).

20010423 is a wasteful number, since it uses less digits than its factorization.

20010423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66145.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20010423 is about 4473.3011300381. The cubic root of 20010423 is about 271.4889074285.

Adding to 20010423 its reverse (32401002), we get a palindrome (52411425).

The spelling of 20010423 in words is "twenty million, ten thousand, four hundred twenty-three".