10420123105240 has 32 divisors (see below), whose sum is σ = 23944112671680. Its totient is φ = 4079367342592.

The previous prime is 10420123105163. The next prime is 10420123105241. The reversal of 10420123105240 is 4250132102401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420123105241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771307457 + ... + 2771311216.

It is an arithmetic number, because the mean of its divisors is an integer number (748253520990).

Almost surely, 2^{10420123105240} is an apocalyptic number.

10420123105240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10420123105240 is an abundant number, since it is smaller than the sum of its proper divisors (13523989566440).

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

10420123105240 is a wasteful number, since it uses less digits than its factorization.

10420123105240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542618731 (or 5542618727 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 10420123105240 its reverse (4250132102401), we get a palindrome (14670255207641).

The spelling of 10420123105240 in words is "ten trillion, four hundred twenty billion, one hundred twenty-three million, one hundred five thousand, two hundred forty".