124405421224 has 128 divisors (see below), whose sum is σ = 278406881280. Its totient is φ = 50995526400.

The previous prime is 124405421221. The next prime is 124405421227. The reversal of 124405421224 is 422124504421.

It is an interprime number because it is at equal distance from previous prime (124405421221) and next prime (124405421227).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (124405421221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64357762 + ... + 64359694.

It is an arithmetic number, because the mean of its divisors is an integer number (2175053760).

Almost surely, 2^124405421224 is an apocalyptic number.

124405421224 is a gapful number since it is divisible by the number (14) 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 124405421224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139203440640).

124405421224 is an abundant number, since it is smaller than the sum of its proper divisors (154001460056).

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

124405421224 is a wasteful number, since it uses less digits than its factorization.

124405421224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391 (or 2387 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 124405421224 its reverse (422124504421), we get a palindrome (546529925645).

The spelling of 124405421224 in words is "one hundred twenty-four billion, four hundred five million, four hundred twenty-one thousand, two hundred twenty-four".