2240121420 has 120 divisors (see below), whose sum is σ = 7097439888. Its totient is φ = 591408000.

The previous prime is 2240121419. The next prime is 2240121431. The reversal of 2240121420 is 241210422.

2240121420 is a `hidden beast` number, since 2 + 240 + 1 + 2 + 1 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2240121393 and 2240121402.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 156775 + ... + 170465.

Almost surely, 2^2240121420 is an apocalyptic number.

2240121420 is a gapful number since it is divisible by the number (20) 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 2240121420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3548719944).

2240121420 is an abundant number, since it is smaller than the sum of its proper divisors (4857318468).

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

2240121420 is a wasteful number, since it uses less digits than its factorization.

2240121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13813 (or 13802 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2240121420 is about 47329.9209802848. The cubic root of 2240121420 is about 1308.4501648906.

Adding to 2240121420 its reverse (241210422), we get a palindrome (2481331842).

The spelling of 2240121420 in words is "two billion, two hundred forty million, one hundred twenty-one thousand, four hundred twenty".