42391237774873 has 16 divisors (see below), whose sum is σ = 45776314213056. Its totient is φ = 39024049711680.

The previous prime is 42391237774861. The next prime is 42391237774883. The reversal of 42391237774873 is 37847773219324.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42391237774873 - 2²⁹ = 42390700903961 is a prime.

It is a super-3 number, since 3×42391237774873³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42391237774799 and 42391237774808.

It is not an unprimeable number, because it can be changed into a prime (42391237774883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4081378 + ... + 10071748.

It is an arithmetic number, because the mean of its divisors is an integer number (2861019638316).

Almost surely, 2^{42391237774873} is an apocalyptic number.

It is an amenable number.

42391237774873 is a deficient number, since it is larger than the sum of its proper divisors (3385076438183).

42391237774873 is a wasteful number, since it uses less digits than its factorization.

42391237774873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5991864.

The product of its digits is 298722816, while the sum is 67.

The spelling of 42391237774873 in words is "forty-two trillion, three hundred ninety-one billion, two hundred thirty-seven million, seven hundred seventy-four thousand, eight hundred seventy-three".