420753503 has 2 divisors, whose sum is σ = 420753504. Its totient is φ = 420753502.

The previous prime is 420753493. The next prime is 420753511. The reversal of 420753503 is 305357024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420753503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420753523) 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, 210376751 + 210376752.

It is an arithmetic number, because the mean of its divisors is an integer number (210376752).

Almost surely, 2^420753503 is an apocalyptic number.

420753503 is a deficient number, since it is larger than the sum of its proper divisors (1).

420753503 is an equidigital number, since it uses as much as digits as its factorization.

420753503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 420753503 is about 20512.2768848317. The cubic root of 420753503 is about 749.3348194060.

The spelling of 420753503 in words is "four hundred twenty million, seven hundred fifty-three thousand, five hundred three".