42739371 has 6 divisors (see below), whose sum is σ = 61734660. Its totient is φ = 28492908.

The previous prime is 42739369. The next prime is 42739387. The reversal of 42739371 is 17393724.

It is not a de Polignac number, because 42739371 - 2¹ = 42739369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42739321) 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, 2374401 + ... + 2374418.

It is an arithmetic number, because the mean of its divisors is an integer number (10289110).

Almost surely, 2^42739371 is an apocalyptic number.

42739371 is a deficient number, since it is larger than the sum of its proper divisors (18995289).

42739371 is a wasteful number, since it uses less digits than its factorization.

42739371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748825 (or 4748822 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 42739371 is about 6537.5355448364. The cubic root of 42739371 is about 349.6305516564.

The spelling of 42739371 in words is "forty-two million, seven hundred thirty-nine thousand, three hundred seventy-one".