42681213571923 has 12 divisors (see below), whose sum is σ = 63231477805720. Its totient is φ = 28454119750008.

The previous prime is 42681213571921. The next prime is 42681213571963. The reversal of 42681213571923 is 32917531218624.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

42681213571923 is a `hidden beast` number, since 4 + 2 + 6 + 81 + 21 + 357 + 192 + 3 = 666.

It is not a de Polignac number, because 42681213571923 - 2¹ = 42681213571921 is a prime.

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 42681213571923.

It is not an unprimeable number, because it can be changed into a prime (42681213571921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33318265 + ... + 34575557.

Almost surely, 2^{42681213571923} is an apocalyptic number.

42681213571923 is a deficient number, since it is larger than the sum of its proper divisors (20550264233797).

42681213571923 is an frugal number, since it uses more digits than its factorization.

42681213571923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514595 (or 1257296 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 42681213571923 in words is "forty-two trillion, six hundred eighty-one billion, two hundred thirteen million, five hundred seventy-one thousand, nine hundred twenty-three".