420200129971 has 2 divisors, whose sum is σ = 420200129972. Its totient is φ = 420200129970.

The previous prime is 420200129963. The next prime is 420200129983. The reversal of 420200129971 is 179921002024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420200129971 - 2³ = 420200129963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420200129971.

It is not a weakly prime, because it can be changed into another prime (420200129471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210100064985 + 210100064986.

It is an arithmetic number, because the mean of its divisors is an integer number (210100064986).

Almost surely, 2^420200129971 is an apocalyptic number.

420200129971 is a deficient number, since it is larger than the sum of its proper divisors (1).

420200129971 is an equidigital number, since it uses as much as digits as its factorization.

420200129971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 420200129971 in words is "four hundred twenty billion, two hundred million, one hundred twenty-nine thousand, nine hundred seventy-one".