42740929 has 8 divisors (see below), whose sum is σ = 53287488. Its totient is φ = 33304560.

The previous prime is 42740917. The next prime is 42740947. The reversal of 42740929 is 92904724.

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 42740929 - 2⁷ = 42740801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42740959) 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, 277462 + ... + 277615.

It is an arithmetic number, because the mean of its divisors is an integer number (6660936).

Almost surely, 2^42740929 is an apocalyptic number.

It is an amenable number.

42740929 is a deficient number, since it is larger than the sum of its proper divisors (10546559).

42740929 is a wasteful number, since it uses less digits than its factorization.

42740929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555095.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 42740929 is about 6537.6547018025. The cubic root of 42740929 is about 349.6348000249.

The spelling of 42740929 in words is "forty-two million, seven hundred forty thousand, nine hundred twenty-nine".