42697727 has 6 divisors (see below), whose sum is σ = 45357408. Its totient is φ = 40185824.

The previous prime is 42697709. The next prime is 42697763. The reversal of 42697727 is 72779624.

It is not a de Polignac number, because 42697727 - 2¹² = 42693631 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 (42697027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73583 + ... + 74160.

It is an arithmetic number, because the mean of its divisors is an integer number (7559568).

Almost surely, 2^42697727 is an apocalyptic number.

42697727 is a deficient number, since it is larger than the sum of its proper divisors (2659681).

42697727 is a wasteful number, since it uses less digits than its factorization.

42697727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147777 (or 147760 counting only the distinct ones).

The product of its digits is 296352, while the sum is 44.

The square root of 42697727 is about 6534.3497763741. The cubic root of 42697727 is about 349.5169581409.

The spelling of 42697727 in words is "forty-two million, six hundred ninety-seven thousand, seven hundred twenty-seven".