420151601 has 2 divisors, whose sum is σ = 420151602. Its totient is φ = 420151600.

The previous prime is 420151597. The next prime is 420151619. The reversal of 420151601 is 106151024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400800400 + 19351201 = 20020^2 + 4399^2 .

It is a cyclic number.

It is not a de Polignac number, because 420151601 - 2² = 420151597 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420151621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210075800 + 210075801.

It is an arithmetic number, because the mean of its divisors is an integer number (210075801).

Almost surely, 2^420151601 is an apocalyptic number.

It is an amenable number.

420151601 is a deficient number, since it is larger than the sum of its proper divisors (1).

420151601 is an equidigital number, since it uses as much as digits as its factorization.

420151601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 420151601 is about 20497.5998838888. The cubic root of 420151601 is about 748.9773326878.

The spelling of 420151601 in words is "four hundred twenty million, one hundred fifty-one thousand, six hundred one".