42451831422 has 144 divisors (see below), whose sum is σ = 124432395360. Its totient is φ = 10178213760.

The previous prime is 42451831417. The next prime is 42451831517. The reversal of 42451831422 is 22413815424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 91104 + ... + 305292.

Almost surely, 2^42451831422 is an apocalyptic number.

42451831422 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 42451831422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62216197680).

42451831422 is an abundant number, since it is smaller than the sum of its proper divisors (81980563938).

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

42451831422 is a wasteful number, since it uses less digits than its factorization.

42451831422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214239 (or 214225 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The spelling of 42451831422 in words is "forty-two billion, four hundred fifty-one million, eight hundred thirty-one thousand, four hundred twenty-two".