42750129 has 8 divisors (see below), whose sum is σ = 57049920. Its totient is φ = 28475216.

The previous prime is 42750101. The next prime is 42750137. The reversal of 42750129 is 92105724.

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 42750129 - 2⁸ = 42749873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42750096 and 42750105.

It is not an unprimeable number, because it can be changed into a prime (42750329) 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, 1749 + ... + 9410.

It is an arithmetic number, because the mean of its divisors is an integer number (7131240).

Almost surely, 2^42750129 is an apocalyptic number.

It is an amenable number.

42750129 is a deficient number, since it is larger than the sum of its proper divisors (14299791).

42750129 is a wasteful number, since it uses less digits than its factorization.

42750129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12439.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 42750129 is about 6538.3582801801. The cubic root of 42750129 is about 349.6598845630.

The spelling of 42750129 in words is "forty-two million, seven hundred fifty thousand, one hundred twenty-nine".