420251141 has 2 divisors, whose sum is σ = 420251142. Its totient is φ = 420251140.

The previous prime is 420251123. The next prime is 420251173. The reversal of 420251141 is 141152024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420045025 + 206116 = 20495^2 + 454^2 .

It is a cyclic number.

It is not a de Polignac number, because 420251141 - 2⁶ = 420251077 is a prime.

It is a super-2 number, since 2×420251141² = 353222043023603762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420251191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210125570 + 210125571.

It is an arithmetic number, because the mean of its divisors is an integer number (210125571).

Almost surely, 2^420251141 is an apocalyptic number.

It is an amenable number.

420251141 is a deficient number, since it is larger than the sum of its proper divisors (1).

420251141 is an equidigital number, since it uses as much as digits as its factorization.

420251141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 420251141 is about 20500.0278292494. The cubic root of 420251141 is about 749.0364758770.

The spelling of 420251141 in words is "four hundred twenty million, two hundred fifty-one thousand, one hundred forty-one".