420033457 has 2 divisors, whose sum is σ = 420033458. Its totient is φ = 420033456.

The previous prime is 420033443. The next prime is 420033473. The reversal of 420033457 is 754330024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404854641 + 15178816 = 20121^2 + 3896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420033457 is a prime.

It is not a weakly prime, because it can be changed into another prime (420033157) 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, 210016728 + 210016729.

It is an arithmetic number, because the mean of its divisors is an integer number (210016729).

Almost surely, 2^420033457 is an apocalyptic number.

It is an amenable number.

420033457 is a deficient number, since it is larger than the sum of its proper divisors (1).

420033457 is an equidigital number, since it uses as much as digits as its factorization.

420033457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 420033457 is about 20494.7177828825. The cubic root of 420033457 is about 748.9071235275.

The spelling of 420033457 in words is "four hundred twenty million, thirty-three thousand, four hundred fifty-seven".