42561106240 has 56 divisors (see below), whose sum is σ = 105755114880. Its totient is φ = 16284246528.

The previous prime is 42561106223. The next prime is 42561106261. The reversal of 42561106240 is 4260116524.

It is a happy number.

It is a super-2 number, since 2×42561106240² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2884020 + ... + 2898739.

Almost surely, 2^42561106240 is an apocalyptic number.

42561106240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42561106240 is an abundant number, since it is smaller than the sum of its proper divisors (63194008640).

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

42561106240 is a wasteful number, since it uses less digits than its factorization.

42561106240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782799 (or 5782789 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 42561106240 in words is "forty-two billion, five hundred sixty-one million, one hundred six thousand, two hundred forty".