42222222990 has 96 divisors (see below), whose sum is σ = 113952099456. Its totient is φ = 10838983680.

The previous prime is 42222222989. The next prime is 42222223007. The reversal of 42222222990 is 9922222224.

42222222990 is a `hidden beast` number, since 422 + 2 + 2 + 2 + 229 + 9 + 0 = 666.

It is a super-2 number, since 2×42222222990² (a number of 22 digits) contains 22 as substring.

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, 176214 + ... + 339846.

It is an arithmetic number, because the mean of its divisors is an integer number (1187001036).

Almost surely, 2^42222222990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42222222990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56976049728).

42222222990 is an abundant number, since it is smaller than the sum of its proper divisors (71729876466).

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

42222222990 is a wasteful number, since it uses less digits than its factorization.

42222222990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163754 (or 163751 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 42222222990 in words is "forty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, nine hundred ninety".