42734429 has 4 divisors (see below), whose sum is σ = 44208060. Its totient is φ = 41260800.

The previous prime is 42734407. The next prime is 42734449. The reversal of 42734429 is 92443724.

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 19598329 + 23136100 = 4427^2 + 4810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42734429 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 (42734449) 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, 736772 + ... + 736829.

It is an arithmetic number, because the mean of its divisors is an integer number (11052015).

Almost surely, 2^42734429 is an apocalyptic number.

It is an amenable number.

42734429 is a deficient number, since it is larger than the sum of its proper divisors (1473631).

42734429 is a wasteful number, since it uses less digits than its factorization.

42734429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473630.

The product of its digits is 48384, while the sum is 35.

The square root of 42734429 is about 6537.1575627332. The cubic root of 42734429 is about 349.6170750832.

The spelling of 42734429 in words is "forty-two million, seven hundred thirty-four thousand, four hundred twenty-nine".