42731658 has 32 divisors (see below), whose sum is σ = 95659200. Its totient is φ = 14138928.

The previous prime is 42731657. The next prime is 42731669. The reversal of 42731658 is 85613724.

It is not an unprimeable number, because it can be changed into a prime (42731657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660 + ... + 10352.

It is an arithmetic number, because the mean of its divisors is an integer number (2989350).

Almost surely, 2^42731658 is an apocalyptic number.

42731658 is an abundant number, since it is smaller than the sum of its proper divisors (52927542).

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

42731658 is a wasteful number, since it uses less digits than its factorization.

42731658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843 (or 5837 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42731658 is about 6536.9456170294. The cubic root of 42731658 is about 349.6095182578.

The spelling of 42731658 in words is "forty-two million, seven hundred thirty-one thousand, six hundred fifty-eight".