42097260861 has 6 divisors (see below), whose sum is σ = 60807154590. Its totient is φ = 28064840568.

The previous prime is 42097260851. The next prime is 42097260917. The reversal of 42097260861 is 16806279024.

It is a happy number.

42097260861 is a `hidden beast` number, since 420 + 97 + 2 + 60 + 86 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39922437636 + 2174823225 = 199806^2 + 46635^2 .

It is not a de Polignac number, because 42097260861 - 2¹⁵ = 42097228093 is a prime.

It is a super-2 number, since 2×42097260861² (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 (42097260811) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2338736706 + ... + 2338736723.

It is an arithmetic number, because the mean of its divisors is an integer number (10134525765).

Almost surely, 2^42097260861 is an apocalyptic number.

It is an amenable number.

42097260861 is a deficient number, since it is larger than the sum of its proper divisors (18709893729).

42097260861 is a wasteful number, since it uses less digits than its factorization.

42097260861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677473435 (or 4677473432 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 42097260861 in words is "forty-two billion, ninety-seven million, two hundred sixty thousand, eight hundred sixty-one".