10520134420 has 24 divisors (see below), whose sum is σ = 22454453448. Its totient is φ = 4139068800.

The previous prime is 10520134411. The next prime is 10520134441. The reversal of 10520134420 is 2443102501.

It can be written as a sum of positive squares in 4 ways, for example, as 1450238724 + 9069895696 = 38082^2 + 95236^2 .

It is a super-2 number, since 2×10520134420² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10520134391 and 10520134400.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4310311 + ... + 4312750.

It is an arithmetic number, because the mean of its divisors is an integer number (935602227).

Almost surely, 2^10520134420 is an apocalyptic number.

10520134420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10520134420 is an abundant number, since it is smaller than the sum of its proper divisors (11934319028).

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

10520134420 is a wasteful number, since it uses less digits than its factorization.

10520134420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623131 (or 8623129 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 10520134420 its reverse (2443102501), we get a palindrome (12963236921).

The spelling of 10520134420 in words is "ten billion, five hundred twenty million, one hundred thirty-four thousand, four hundred twenty".