10420542500 has 60 divisors (see below), whose sum is σ = 22819892172. Its totient is φ = 4162320000.

The previous prime is 10420542469. The next prime is 10420542521. The reversal of 10420542500 is 524502401.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 6175759396 + 4244783104 = 78586^2 + 65152^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2049962 + ... + 2055038.

Almost surely, 2^10420542500 is an apocalyptic number.

10420542500 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 10420542500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11409946086).

10420542500 is an abundant number, since it is smaller than the sum of its proper divisors (12399349672).

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

10420542500 is an equidigital number, since it uses as much as digits as its factorization.

10420542500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The spelling of 10420542500 in words is "ten billion, four hundred twenty million, five hundred forty-two thousand, five hundred".