42741389 has 4 divisors (see below), whose sum is σ = 44215260. Its totient is φ = 41267520.

The previous prime is 42741367. The next prime is 42741403. The reversal of 42741389 is 98314724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20340100 + 22401289 = 4510^2 + 4733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42741389 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 (42741319) 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, 736892 + ... + 736949.

It is an arithmetic number, because the mean of its divisors is an integer number (11053815).

Almost surely, 2^42741389 is an apocalyptic number.

It is an amenable number.

42741389 is a deficient number, since it is larger than the sum of its proper divisors (1473871).

42741389 is a wasteful number, since it uses less digits than its factorization.

42741389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473870.

The product of its digits is 48384, while the sum is 38.

The square root of 42741389 is about 6537.6898825197. The cubic root of 42741389 is about 349.6360543372.

The spelling of 42741389 in words is "forty-two million, seven hundred forty-one thousand, three hundred eighty-nine".