42739351 has 4 divisors (see below), whose sum is σ = 42866512. Its totient is φ = 42612192.

The previous prime is 42739339. The next prime is 42739363. The reversal of 42739351 is 15393724.

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

It is an interprime number because it is at equal distance from previous prime (42739339) and next prime (42739363).

It is a cyclic number.

It is not a de Polignac number, because 42739351 - 2¹⁵ = 42706583 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 (42739321) 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, 63075 + ... + 63748.

It is an arithmetic number, because the mean of its divisors is an integer number (10716628).

Almost surely, 2^42739351 is an apocalyptic number.

42739351 is a deficient number, since it is larger than the sum of its proper divisors (127161).

42739351 is a wasteful number, since it uses less digits than its factorization.

42739351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127160.

The product of its digits is 22680, while the sum is 34.

The square root of 42739351 is about 6537.5340152079. The cubic root of 42739351 is about 349.6304971196.

The spelling of 42739351 in words is "forty-two million, seven hundred thirty-nine thousand, three hundred fifty-one".