42135726 has 8 divisors (see below), whose sum is σ = 84271464. Its totient is φ = 14045240.

The previous prime is 42135721. The next prime is 42135761. The reversal of 42135726 is 62753124.

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

42135726 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 42135693 and 42135702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42135721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3511305 + ... + 3511316.

It is an arithmetic number, because the mean of its divisors is an integer number (10533933).

Almost surely, 2^42135726 is an apocalyptic number.

42135726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42135726 is a wasteful number, since it uses less digits than its factorization.

42135726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7022626.

The product of its digits is 10080, while the sum is 30.

The square root of 42135726 is about 6491.2037404475. The cubic root of 42135726 is about 347.9766961539.

The spelling of 42135726 in words is "forty-two million, one hundred thirty-five thousand, seven hundred twenty-six".