420202503 has 12 divisors (see below), whose sum is σ = 693667728. Its totient is φ = 240115680.

The previous prime is 420202463. The next prime is 420202507. The reversal of 420202503 is 305202024.

It is not a de Polignac number, because 420202503 - 2⁶ = 420202439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420202507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3334878 + ... + 3335003.

It is an arithmetic number, because the mean of its divisors is an integer number (57805644).

Almost surely, 2^420202503 is an apocalyptic number.

420202503 is a deficient number, since it is larger than the sum of its proper divisors (273465225).

420202503 is a wasteful number, since it uses less digits than its factorization.

420202503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669894 (or 6669891 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 420202503 is about 20498.8415038509. The cubic root of 420202503 is about 749.0075780441.

Adding to 420202503 its reverse (305202024), we get a palindrome (725404527).

The spelling of 420202503 in words is "four hundred twenty million, two hundred two thousand, five hundred three".