42127226420 has 144 divisors (see below), whose sum is σ = 98079569280. Its totient is φ = 15144433920.

The previous prime is 42127226413. The next prime is 42127226441. The reversal of 42127226420 is 2462272124.

It is a congruent number.

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, 155450885 + ... + 155451155.

It is an arithmetic number, because the mean of its divisors is an integer number (681108120).

Almost surely, 2^42127226420 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 42127226420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49039784640).

42127226420 is an abundant number, since it is smaller than the sum of its proper divisors (55952342860).

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

42127226420 is a wasteful number, since it uses less digits than its factorization.

42127226420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 42127226420 its reverse (2462272124), we get a palindrome (44589498544).

The spelling of 42127226420 in words is "forty-two billion, one hundred twenty-seven million, two hundred twenty-six thousand, four hundred twenty".