420000240397 has 2 divisors, whose sum is σ = 420000240398. Its totient is φ = 420000240396.

The previous prime is 420000240383. The next prime is 420000240403. The reversal of 420000240397 is 793042000024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313920401796 + 106079838601 = 560286^2 + 325699^2 .

It is a cyclic number.

It is not a de Polignac number, because 420000240397 - 2⁷ = 420000240269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420000240097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210000120198 + 210000120199.

It is an arithmetic number, because the mean of its divisors is an integer number (210000120199).

Almost surely, 2^420000240397 is an apocalyptic number.

It is an amenable number.

420000240397 is a deficient number, since it is larger than the sum of its proper divisors (1).

420000240397 is an equidigital number, since it uses as much as digits as its factorization.

420000240397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 420000240397 in words is "four hundred twenty billion, two hundred forty thousand, three hundred ninety-seven".