10420123424520 has 64 divisors (see below), whose sum is σ = 31563869051520. Its totient is φ = 2751721910784.

The previous prime is 10420123424471. The next prime is 10420123424549. The reversal of 10420123424520 is 2542432102401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421513669 + ... + 421538388.

It is an arithmetic number, because the mean of its divisors is an integer number (493185453930).

Almost surely, 2^{10420123424520} is an apocalyptic number.

10420123424520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10420123424520 is an abundant number, since it is smaller than the sum of its proper divisors (21143745627000).

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

10420123424520 is a wasteful number, since it uses less digits than its factorization.

10420123424520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843052174 (or 843052170 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 10420123424520 its reverse (2542432102401), we get a palindrome (12962555526921).

The spelling of 10420123424520 in words is "ten trillion, four hundred twenty billion, one hundred twenty-three million, four hundred twenty-four thousand, five hundred twenty".