42706228 has 12 divisors (see below), whose sum is σ = 74789092. Its totient is φ = 21337920.

The previous prime is 42706219. The next prime is 42706249. The reversal of 42706228 is 82260724.

It can be written as a sum of positive squares in 2 ways, for example, as 169744 + 42536484 = 412^2 + 6522^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42706228.

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, 4576 + ... + 10312.

Almost surely, 2^42706228 is an apocalyptic number.

It is an amenable number.

42706228 is a deficient number, since it is larger than the sum of its proper divisors (32082864).

42706228 is a wasteful number, since it uses less digits than its factorization.

42706228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602 (or 7600 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 42706228 is about 6535.0002295333. Note that the first 3 decimals coincide. The cubic root of 42706228 is about 349.5401525567.

The spelling of 42706228 in words is "forty-two million, seven hundred six thousand, two hundred twenty-eight".