101242503 has 12 divisors (see below), whose sum is σ = 146880760. Its totient is φ = 67198896.

The previous prime is 101242499. The next prime is 101242517. The reversal of 101242503 is 305242101.

It is not a de Polignac number, because 101242503 - 2² = 101242499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101242553) 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, 22501 + ... + 26622.

Almost surely, 2^101242503 is an apocalyptic number.

101242503 is a deficient number, since it is larger than the sum of its proper divisors (45638257).

101242503 is a wasteful number, since it uses less digits than its factorization.

101242503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49358 (or 49355 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 101242503 is about 10061.9333629278. The cubic root of 101242503 is about 466.0733719439.

Adding to 101242503 its reverse (305242101), we get a palindrome (406484604).

The spelling of 101242503 in words is "one hundred one million, two hundred forty-two thousand, five hundred three".