4021294938450 has 96 divisors (see below), whose sum is σ = 10099571919360. Its totient is φ = 1058767718400.

The previous prime is 4021294938439. The next prime is 4021294938497. The reversal of 4021294938450 is 548394921204.

It is a junction number, because it is equal to n+sod(n) for n = 4021294938393 and 4021294938402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5797311 + ... + 6453789.

It is an arithmetic number, because the mean of its divisors is an integer number (105203874160).

Almost surely, 2^{4021294938450} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4021294938450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5049785959680).

4021294938450 is an abundant number, since it is smaller than the sum of its proper divisors (6078276980910).

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

4021294938450 is a wasteful number, since it uses less digits than its factorization.

4021294938450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657012 (or 657007 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 4021294938450 in words is "four trillion, twenty-one billion, two hundred ninety-four million, nine hundred thirty-eight thousand, four hundred fifty".