420250541 has 2 divisors, whose sum is σ = 420250542. Its totient is φ = 420250540.

The previous prime is 420250517. The next prime is 420250559. The reversal of 420250541 is 145052024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277089316 + 143161225 = 16646^2 + 11965^2 .

It is a cyclic number.

It is not a de Polignac number, because 420250541 - 2¹⁰ = 420249517 is a prime.

It is a super-2 number, since 2×420250541² = 353221034421585362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420250511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210125270 + 210125271.

It is an arithmetic number, because the mean of its divisors is an integer number (210125271).

Almost surely, 2^420250541 is an apocalyptic number.

It is an amenable number.

420250541 is a deficient number, since it is larger than the sum of its proper divisors (1).

420250541 is an equidigital number, since it uses as much as digits as its factorization.

420250541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 420250541 is about 20500.0131951177. The cubic root of 420250541 is about 749.0361194059.

The spelling of 420250541 in words is "four hundred twenty million, two hundred fifty thousand, five hundred forty-one".