40420404201271 has 2 divisors, whose sum is σ = 40420404201272. Its totient is φ = 40420404201270.

The previous prime is 40420404201217. The next prime is 40420404201323. The reversal of 40420404201271 is 17210240402404.

Together with previous prime (40420404201217) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40420404201271 - 2³¹ = 40418256717623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40420404201071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20210202100635 + 20210202100636.

It is an arithmetic number, because the mean of its divisors is an integer number (20210202100636).

Almost surely, 2^{40420404201271} is an apocalyptic number.

40420404201271 is a deficient number, since it is larger than the sum of its proper divisors (1).

40420404201271 is an equidigital number, since it uses as much as digits as its factorization.

40420404201271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 31.

Adding to 40420404201271 its reverse (17210240402404), we get a palindrome (57630644603675).

The spelling of 40420404201271 in words is "forty trillion, four hundred twenty billion, four hundred four million, two hundred one thousand, two hundred seventy-one".