42618272 has 12 divisors (see below), whose sum is σ = 83904786. Its totient is φ = 21309120.

The previous prime is 42618271. The next prime is 42618281. The reversal of 42618272 is 27281624.

It can be written as a sum of positive squares in only one way, i.e., 42562576 + 55696 = 6524^2 + 236^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1331821 = 42618272 / (4 + 2 + 6 + 1 + 8 + 2 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (42618271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665879 + ... + 665942.

Almost surely, 2^42618272 is an apocalyptic number.

It is an amenable number.

42618272 is a deficient number, since it is larger than the sum of its proper divisors (41286514).

42618272 is a wasteful number, since it uses less digits than its factorization.

42618272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331831 (or 1331823 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 42618272 is about 6528.2671513963. The cubic root of 42618272 is about 349.3000214271.

Adding to 42618272 its reverse (27281624), we get a palindrome (69899896).

The spelling of 42618272 in words is "forty-two million, six hundred eighteen thousand, two hundred seventy-two".