124820801840 has 80 divisors (see below), whose sum is σ = 332185078080. Its totient is φ = 42728816640.

The previous prime is 124820801837. The next prime is 124820801843. The reversal of 124820801840 is 48108028421.

It is an interprime number because it is at equal distance from previous prime (124820801837) and next prime (124820801843).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 124820801794 and 124820801803.

It is not an unprimeable number, because it can be changed into a prime (124820801843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185096 + ... + 532824.

It is an arithmetic number, because the mean of its divisors is an integer number (4152313476).

Almost surely, 2^124820801840 is an apocalyptic number.

124820801840 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 124820801840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166092539040).

124820801840 is an abundant number, since it is smaller than the sum of its proper divisors (207364276240).

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

124820801840 is a wasteful number, since it uses less digits than its factorization.

124820801840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348390 (or 348384 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The spelling of 124820801840 in words is "one hundred twenty-four billion, eight hundred twenty million, eight hundred one thousand, eight hundred forty".