124121002420 has 48 divisors (see below), whose sum is σ = 267030086400. Its totient is φ = 48436649856.

The previous prime is 124121002399. The next prime is 124121002433. The reversal of 124121002420 is 24200121421.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 648981 + ... + 818179.

It is an arithmetic number, because the mean of its divisors is an integer number (5563126800).

Almost surely, 2^124121002420 is an apocalyptic number.

124121002420 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 124121002420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133515043200).

124121002420 is an abundant number, since it is smaller than the sum of its proper divisors (142909083980).

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

124121002420 is a wasteful number, since it uses less digits than its factorization.

124121002420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170104 (or 170102 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 124121002420 its reverse (24200121421), we get a palindrome (148321123841).

The spelling of 124121002420 in words is "one hundred twenty-four billion, one hundred twenty-one million, two thousand, four hundred twenty".