42272849 has 2 divisors, whose sum is σ = 42272850. Its totient is φ = 42272848.

The previous prime is 42272837. The next prime is 42272887. The reversal of 42272849 is 94827224.

It is an a-pointer prime, because the next prime (42272887) can be obtained adding 42272849 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36820624 + 5452225 = 6068^2 + 2335^2 .

It is a cyclic number.

It is not a de Polignac number, because 42272849 - 2¹² = 42268753 is a prime.

It is not a weakly prime, because it can be changed into another prime (42272899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21136424 + 21136425.

It is an arithmetic number, because the mean of its divisors is an integer number (21136425).

Almost surely, 2^42272849 is an apocalyptic number.

It is an amenable number.

42272849 is a deficient number, since it is larger than the sum of its proper divisors (1).

42272849 is an equidigital number, since it uses as much as digits as its factorization.

42272849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 42272849 is about 6501.7573778172. The cubic root of 42272849 is about 348.3537628843.

The spelling of 42272849 in words is "forty-two million, two hundred seventy-two thousand, eight hundred forty-nine".