42381197 has 2 divisors, whose sum is σ = 42381198. Its totient is φ = 42381196.

The previous prime is 42381193. The next prime is 42381223. The reversal of 42381197 is 79118324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23319241 + 19061956 = 4829^2 + 4366^2 .

It is a cyclic number.

It is not a de Polignac number, because 42381197 - 2² = 42381193 is a prime.

It is a Chen prime.

It is equal to p_2569436 and since 42381197 and 2569436 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42381193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21190598 + 21190599.

It is an arithmetic number, because the mean of its divisors is an integer number (21190599).

Almost surely, 2^42381197 is an apocalyptic number.

It is an amenable number.

42381197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42381197 is an equidigital number, since it uses as much as digits as its factorization.

42381197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 42381197 is about 6510.0842544471. The cubic root of 42381197 is about 348.6511265899.

The spelling of 42381197 in words is "forty-two million, three hundred eighty-one thousand, one hundred ninety-seven".