420202577 has 2 divisors, whose sum is σ = 420202578. Its totient is φ = 420202576.

The previous prime is 420202511. The next prime is 420202597. The reversal of 420202577 is 775202024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272118016 + 148084561 = 16496^2 + 12169^2 .

It is a cyclic number.

It is not a de Polignac number, because 420202577 - 2²⁴ = 403425361 is a prime.

It is not a weakly prime, because it can be changed into another prime (420202507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210101288 + 210101289.

It is an arithmetic number, because the mean of its divisors is an integer number (210101289).

Almost surely, 2^420202577 is an apocalyptic number.

It is an amenable number.

420202577 is a deficient number, since it is larger than the sum of its proper divisors (1).

420202577 is an equidigital number, since it uses as much as digits as its factorization.

420202577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 420202577 is about 20498.8433088309. The cubic root of 420202577 is about 749.0076220122.

The spelling of 420202577 in words is "four hundred twenty million, two hundred two thousand, five hundred seventy-seven".