42840881622 has 48 divisors (see below), whose sum is σ = 115726021632. Its totient is φ = 11127501360.

The previous prime is 42840881563. The next prime is 42840881623. The reversal of 42840881622 is 22618804824.

It is a super-2 number, since 2×42840881622² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42840881623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15453478 + ... + 15456249.

It is an arithmetic number, because the mean of its divisors is an integer number (2410958784).

Almost surely, 2^42840881622 is an apocalyptic number.

42840881622 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42840881622 is an abundant number, since it is smaller than the sum of its proper divisors (72885140010).

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

42840881622 is a wasteful number, since it uses less digits than its factorization.

42840881622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909753 (or 30909750 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The spelling of 42840881622 in words is "forty-two billion, eight hundred forty million, eight hundred eighty-one thousand, six hundred twenty-two".