42940727 has 4 divisors (see below), whose sum is σ = 42975480. Its totient is φ = 42905976.

The previous prime is 42940721. The next prime is 42940823. The reversal of 42940727 is 72704924.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42940727 - 2⁶ = 42940663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42940721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15452 + ... + 18017.

It is an arithmetic number, because the mean of its divisors is an integer number (10743870).

Almost surely, 2^42940727 is an apocalyptic number.

42940727 is a deficient number, since it is larger than the sum of its proper divisors (34753).

42940727 is a wasteful number, since it uses less digits than its factorization.

42940727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34752.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 42940727 is about 6552.9174418727. The cubic root of 42940727 is about 350.1787576660.

The spelling of 42940727 in words is "forty-two million, nine hundred forty thousand, seven hundred twenty-seven".