42685129 has 8 divisors (see below), whose sum is σ = 44781120. Its totient is φ = 40630800.

The previous prime is 42685067. The next prime is 42685169. The reversal of 42685129 is 92158624.

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

It is a cyclic number.

It is not a de Polignac number, because 42685129 - 2⁹ = 42684617 is a prime.

It is a super-3 number, since 3×42685129³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42685169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8307 + ... + 12424.

It is an arithmetic number, because the mean of its divisors is an integer number (5597640).

Almost surely, 2^42685129 is an apocalyptic number.

It is an amenable number.

42685129 is a deficient number, since it is larger than the sum of its proper divisors (2095991).

42685129 is a wasteful number, since it uses less digits than its factorization.

42685129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20831.

The product of its digits is 34560, while the sum is 37.

The square root of 42685129 is about 6533.3857225791. The cubic root of 42685129 is about 349.4825796695.

The spelling of 42685129 in words is "forty-two million, six hundred eighty-five thousand, one hundred twenty-nine".