10500420401 has 4 divisors (see below), whose sum is σ = 10547507712. Its totient is φ = 10453333092.

The previous prime is 10500420349. The next prime is 10500420451. The reversal of 10500420401 is 10402400501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10402400501 = 73 ⋅142498637.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10500420401 is a prime.

It is a super-2 number, since 2×10500420401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10500420401.

It is not an unprimeable number, because it can be changed into a prime (10500420451) 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, 23543321 + ... + 23543766.

It is an arithmetic number, because the mean of its divisors is an integer number (2636876928).

Almost surely, 2^10500420401 is an apocalyptic number.

It is an amenable number.

10500420401 is a deficient number, since it is larger than the sum of its proper divisors (47087311).

10500420401 is an equidigital number, since it uses as much as digits as its factorization.

10500420401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47087310.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 10500420401 its reverse (10402400501), we get a palindrome (20902820902).

The spelling of 10500420401 in words is "ten billion, five hundred million, four hundred twenty thousand, four hundred one".