42412161781 has 8 divisors (see below), whose sum is σ = 47760323328. Its totient is φ = 37312752000.

The previous prime is 42412161733. The next prime is 42412161797. The reversal of 42412161781 is 18716121424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42412161781 - 2⁷ = 42412161653 is a prime.

It is a super-2 number, since 2×42412161781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42412161781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42412161481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62187580 + ... + 62188261.

It is an arithmetic number, because the mean of its divisors is an integer number (5970040416).

Almost surely, 2^42412161781 is an apocalyptic number.

It is an amenable number.

42412161781 is a deficient number, since it is larger than the sum of its proper divisors (5348161547).

42412161781 is a wasteful number, since it uses less digits than its factorization.

42412161781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124375883.

The product of its digits is 21504, while the sum is 37.

The spelling of 42412161781 in words is "forty-two billion, four hundred twelve million, one hundred sixty-one thousand, seven hundred eighty-one".