42711289 has 2 divisors, whose sum is σ = 42711290. Its totient is φ = 42711288.

The previous prime is 42711241. The next prime is 42711301. The reversal of 42711289 is 98211724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 6290064 = 6035^2 + 2508^2 .

It is a cyclic number.

It is not a de Polignac number, because 42711289 - 2¹³ = 42703097 is a prime.

It is not a weakly prime, because it can be changed into another prime (42711689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21355644 + 21355645.

It is an arithmetic number, because the mean of its divisors is an integer number (21355645).

Almost surely, 2^42711289 is an apocalyptic number.

It is an amenable number.

42711289 is a deficient number, since it is larger than the sum of its proper divisors (1).

42711289 is an equidigital number, since it uses as much as digits as its factorization.

42711289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 34.

The square root of 42711289 is about 6535.3874406955. The cubic root of 42711289 is about 349.5539596985.

The spelling of 42711289 in words is "forty-two million, seven hundred eleven thousand, two hundred eighty-nine".