42389597 has 2 divisors, whose sum is σ = 42389598. Its totient is φ = 42389596.

The previous prime is 42389593. The next prime is 42389603. The reversal of 42389597 is 79598324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24019801 + 18369796 = 4901^2 + 4286^2 .

It is a cyclic number.

It is not a de Polignac number, because 42389597 - 2² = 42389593 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42389591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21194798 + 21194799.

It is an arithmetic number, because the mean of its divisors is an integer number (21194799).

Almost surely, 2^42389597 is an apocalyptic number.

It is an amenable number.

42389597 is a deficient number, since it is larger than the sum of its proper divisors (1).

42389597 is an equidigital number, since it uses as much as digits as its factorization.

42389597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 42389597 is about 6510.7293754233. The cubic root of 42389597 is about 348.6741594142.

The spelling of 42389597 in words is "forty-two million, three hundred eighty-nine thousand, five hundred ninety-seven".