10023400420 has 72 divisors (see below), whose sum is σ = 23197160952. Its totient is φ = 3635343360.

The previous prime is 10023400403. The next prime is 10023400427. The reversal of 10023400420 is 2400432001.

It can be written as a sum of positive squares in 4 ways, for example, as 2158903296 + 7864497124 = 46464^2 + 88682^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10023400394 and 10023400403.

It is not an unprimeable number, because it can be changed into a prime (10023400427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 955524 + ... + 965956.

It is an arithmetic number, because the mean of its divisors is an integer number (322182791).

Almost surely, 2^10023400420 is an apocalyptic number.

10023400420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10023400420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11598580476).

10023400420 is an abundant number, since it is smaller than the sum of its proper divisors (13173760532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10023400420 is a wasteful number, since it uses less digits than its factorization.

10023400420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861 (or 10848 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 10023400420 its reverse (2400432001), we get a palindrome (12423832421).

The spelling of 10023400420 in words is "ten billion, twenty-three million, four hundred thousand, four hundred twenty".