420340201129 has 2 divisors, whose sum is σ = 420340201130. Its totient is φ = 420340201128.

The previous prime is 420340201117. The next prime is 420340201147. The reversal of 420340201129 is 921102043024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368901961129 + 51438240000 = 607373^2 + 226800^2 .

It is a cyclic number.

It is not a de Polignac number, because 420340201129 - 2³⁵ = 385980462761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420340201097 and 420340201106.

It is not a weakly prime, because it can be changed into another prime (420340201429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210170100564 + 210170100565.

It is an arithmetic number, because the mean of its divisors is an integer number (210170100565).

Almost surely, 2^420340201129 is an apocalyptic number.

It is an amenable number.

420340201129 is a deficient number, since it is larger than the sum of its proper divisors (1).

420340201129 is an equidigital number, since it uses as much as digits as its factorization.

420340201129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 420340201129 in words is "four hundred twenty billion, three hundred forty million, two hundred one thousand, one hundred twenty-nine".