42601289 has 2 divisors, whose sum is σ = 42601290. Its totient is φ = 42601288.

The previous prime is 42601283. The next prime is 42601291. The reversal of 42601289 is 98210624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34421689 + 8179600 = 5867^2 + 2860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42601289 is a prime.

Together with 42601291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42601283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21300644 + 21300645.

It is an arithmetic number, because the mean of its divisors is an integer number (21300645).

Almost surely, 2^42601289 is an apocalyptic number.

It is an amenable number.

42601289 is a deficient number, since it is larger than the sum of its proper divisors (1).

42601289 is an equidigital number, since it uses as much as digits as its factorization.

42601289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 42601289 is about 6526.9662937693. The cubic root of 42601289 is about 349.2536176185.

The spelling of 42601289 in words is "forty-two million, six hundred one thousand, two hundred eighty-nine".