44121420 has 216 divisors, whose sum is σ = 163092384. Its totient is φ = 9455616.

The previous prime is 44121403. The next prime is 44121431. The reversal of 44121420 is 2412144.

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 = 44121393 and 44121402.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 454812 + ... + 454908.

Almost surely, 2^44121420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44121420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81546192).

44121420 is an abundant number, since it is smaller than the sum of its proper divisors (118970964).

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

44121420 is a wasteful number, since it uses less digits than its factorization.

44121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 133 counting only the distinct ones).

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

The square root of 44121420 is about 6642.3956521725. The cubic root of 44121420 is about 353.3592738362.

Adding to 44121420 its reverse (2412144), we get a palindrome (46533564).

It can be divided in two parts, 4412 and 1420, that added together give a cube (5832 = 18³).

The spelling of 44121420 in words is "forty-four million, one hundred twenty-one thousand, four hundred twenty".