420066377 has 2 divisors, whose sum is σ = 420066378. Its totient is φ = 420066376.

The previous prime is 420066359. The next prime is 420066389. The reversal of 420066377 is 773660024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294088201 + 125978176 = 17149^2 + 11224^2 .

It is a cyclic number.

It is not a de Polignac number, because 420066377 - 2¹⁸ = 419804233 is a prime.

It is a super-2 number, since 2×420066377² = 352911522171812258, which contains 22 as substring.

It is equal to p_22347773 and since 420066377 and 22347773 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (420066077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210033188 + 210033189.

It is an arithmetic number, because the mean of its divisors is an integer number (210033189).

Almost surely, 2^420066377 is an apocalyptic number.

It is an amenable number.

420066377 is a deficient number, since it is larger than the sum of its proper divisors (1).

420066377 is an equidigital number, since it uses as much as digits as its factorization.

420066377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 420066377 is about 20495.5209009188. The cubic root of 420066377 is about 748.9266881423.

The spelling of 420066377 in words is "four hundred twenty million, sixty-six thousand, three hundred seventy-seven".