42166136454 has 48 divisors (see below), whose sum is σ = 91354197312. Its totient is φ = 12969107424.

The previous prime is 42166136443. The next prime is 42166136491. The reversal of 42166136454 is 45463166124.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3200709 + ... + 3213855.

It is an arithmetic number, because the mean of its divisors is an integer number (1903212444).

Almost surely, 2^42166136454 is an apocalyptic number.

42166136454 is an abundant number, since it is smaller than the sum of its proper divisors (49188060858).

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

42166136454 is a wasteful number, since it uses less digits than its factorization.

42166136454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16341 (or 16328 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The spelling of 42166136454 in words is "forty-two billion, one hundred sixty-six million, one hundred thirty-six thousand, four hundred fifty-four".