42729105 has 8 divisors (see below), whose sum is σ = 68366592. Its totient is φ = 22788848.

The previous prime is 42729083. The next prime is 42729107. The reversal of 42729105 is 50192724.

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 42729105 - 2¹² = 42725009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42729107) 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, 1424289 + ... + 1424318.

It is an arithmetic number, because the mean of its divisors is an integer number (8545824).

Almost surely, 2^42729105 is an apocalyptic number.

It is an amenable number.

42729105 is a deficient number, since it is larger than the sum of its proper divisors (25637487).

42729105 is a wasteful number, since it uses less digits than its factorization.

42729105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848615.

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

The square root of 42729105 is about 6536.7503394271. The cubic root of 42729105 is about 349.6025556535.

The spelling of 42729105 in words is "forty-two million, seven hundred twenty-nine thousand, one hundred five".