420052503 has 16 divisors (see below), whose sum is σ = 617865696. Its totient is φ = 252188160.

The previous prime is 420052481. The next prime is 420052517. The reversal of 420052503 is 305250024.

It is not a de Polignac number, because 420052503 - 2⁵ = 420052471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420052503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420052553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129750 + ... + 132947.

It is an arithmetic number, because the mean of its divisors is an integer number (38616606).

Almost surely, 2^420052503 is an apocalyptic number.

420052503 is a deficient number, since it is larger than the sum of its proper divisors (197813193).

420052503 is a wasteful number, since it uses less digits than its factorization.

420052503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262754.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 420052503 is about 20495.1824339282. The cubic root of 420052503 is about 748.9184428397.

It can be divided in two parts, 42005250 and 3, that multiplied together give a triangular number (126015750 = T₁₅₈₇₅).

The spelling of 420052503 in words is "four hundred twenty million, fifty-two thousand, five hundred three".