20102401 has 8 divisors (see below), whose sum is σ = 21971808. Its totient is φ = 18240000.

The previous prime is 20102389. The next prime is 20102413. The reversal of 20102401 is 10420102.

It is an interprime number because it is at equal distance from previous prime (20102389) and next prime (20102413).

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 20102401 - 2⁷ = 20102273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102431) 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, 5626 + ... + 8476.

It is an arithmetic number, because the mean of its divisors is an integer number (2746476).

Almost surely, 2^20102401 is an apocalyptic number.

It is an amenable number.

20102401 is a deficient number, since it is larger than the sum of its proper divisors (1869407).

20102401 is a wasteful number, since it uses less digits than its factorization.

20102401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20102401 is about 4483.5701176629. The cubic root of 20102401 is about 271.9042383845.

Adding to 20102401 its reverse (10420102), we get a palindrome (30522503).

It can be divided in two parts, 20102 and 401, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 20102401 in words is "twenty million, one hundred two thousand, four hundred one".