23420101 has 4 divisors (see below), whose sum is σ = 24797772. Its totient is φ = 22042432.

The previous prime is 23420087. The next prime is 23420107. The reversal of 23420101 is 10102432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6895876 + 16524225 = 2626^2 + 4065^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420101 - 2⁵ = 23420069 is a prime.

It is a super-2 number, since 2×23420101² = 1097002261700402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688810 + ... + 688843.

It is an arithmetic number, because the mean of its divisors is an integer number (6199443).

Almost surely, 2^23420101 is an apocalyptic number.

It is an amenable number.

23420101 is a deficient number, since it is larger than the sum of its proper divisors (1377671).

23420101 is a wasteful number, since it uses less digits than its factorization.

23420101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377670.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 23420101 is about 4839.4318881455. The cubic root of 23420101 is about 286.1077275232.

Adding to 23420101 its reverse (10102432), we get a palindrome (33522533).

The spelling of 23420101 in words is "twenty-three million, four hundred twenty thousand, one hundred one".