420100049 has 2 divisors, whose sum is σ = 420100050. Its totient is φ = 420100048.

The previous prime is 420100019. The next prime is 420100081. The reversal of 420100049 is 940001024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329241025 + 90859024 = 18145^2 + 9532^2 .

It is a cyclic number.

It is not a de Polignac number, because 420100049 - 2⁸ = 420099793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420100049.

It is not a weakly prime, because it can be changed into another prime (420100019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210050024 + 210050025.

It is an arithmetic number, because the mean of its divisors is an integer number (210050025).

Almost surely, 2^420100049 is an apocalyptic number.

It is an amenable number.

420100049 is a deficient number, since it is larger than the sum of its proper divisors (1).

420100049 is an equidigital number, since it uses as much as digits as its factorization.

420100049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 420100049 is about 20496.3423322309. The cubic root of 420100049 is about 748.9466986193.

The spelling of 420100049 in words is "four hundred twenty million, one hundred thousand, forty-nine".