42734428 has 12 divisors (see below), whose sum is σ = 81583992. Its totient is φ = 19424720.

The previous prime is 42734407. The next prime is 42734449. The reversal of 42734428 is 82443724.

It is an interprime number because it is at equal distance from previous prime (42734407) and next prime (42734449).

It is a junction number, because it is equal to n+sod(n) for n = 42734393 and 42734402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485575 + ... + 485662.

It is an arithmetic number, because the mean of its divisors is an integer number (6798666).

Almost surely, 2^42734428 is an apocalyptic number.

It is an amenable number.

42734428 is a deficient number, since it is larger than the sum of its proper divisors (38849564).

42734428 is a wasteful number, since it uses less digits than its factorization.

42734428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971252 (or 971250 counting only the distinct ones).

The product of its digits is 43008, while the sum is 34.

The square root of 42734428 is about 6537.1574862474. The cubic root of 42734428 is about 349.6170723562.

The spelling of 42734428 in words is "forty-two million, seven hundred thirty-four thousand, four hundred twenty-eight".