42729858 has 24 divisors (see below), whose sum is σ = 93539628. Its totient is φ = 14095872.

The previous prime is 42729793. The next prime is 42729899. The reversal of 42729858 is 85892724.

It can be written as a sum of positive squares in 2 ways, for example, as 42029289 + 700569 = 6483^2 + 837^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10491 + ... + 13982.

Almost surely, 2^42729858 is an apocalyptic number.

42729858 is an abundant number, since it is smaller than the sum of its proper divisors (50809770).

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

42729858 is a wasteful number, since it uses less digits than its factorization.

42729858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24578 (or 24575 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 42729858 is about 6536.8079366002. The cubic root of 42729858 is about 349.6046092825.

The spelling of 42729858 in words is "forty-two million, seven hundred twenty-nine thousand, eight hundred fifty-eight".