42774224 has 20 divisors (see below), whose sum is σ = 82984644. Its totient is φ = 21358848.

The previous prime is 42774209. The next prime is 42774253. The reversal of 42774224 is 42247724.

It can be written as a sum of positive squares in 2 ways, for example, as 28090000 + 14684224 = 5300^2 + 3832^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16334 + ... + 18770.

Almost surely, 2^42774224 is an apocalyptic number.

It is an amenable number.

42774224 is a deficient number, since it is larger than the sum of its proper divisors (40210420).

42774224 is a wasteful number, since it uses less digits than its factorization.

42774224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542 (or 3536 counting only the distinct ones).

The product of its digits is 25088, while the sum is 32.

The square root of 42774224 is about 6540.2006085441. The cubic root of 42774224 is about 349.7255644628.

The spelling of 42774224 in words is "forty-two million, seven hundred seventy-four thousand, two hundred twenty-four".