42129086 has 8 divisors (see below), whose sum is σ = 63283680. Its totient is φ = 21034528.

The previous prime is 42129053. The next prime is 42129091. The reversal of 42129086 is 68092124.

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

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 3 ways as a sum of consecutive naturals, for example, 13211 + ... + 16086.

It is an arithmetic number, because the mean of its divisors is an integer number (7910460).

Almost surely, 2^42129086 is an apocalyptic number.

42129086 is a deficient number, since it is larger than the sum of its proper divisors (21154594).

42129086 is a wasteful number, since it uses less digits than its factorization.

42129086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30018.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 42129086 is about 6490.6922589197. The cubic root of 42129086 is about 347.9584164432.

The spelling of 42129086 in words is "forty-two million, one hundred twenty-nine thousand, eighty-six".