40100503 has 2 divisors, whose sum is σ = 40100504. Its totient is φ = 40100502.

The previous prime is 40100491. The next prime is 40100521. The reversal of 40100503 is 30500104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40100503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40100003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20050251 + 20050252.

It is an arithmetic number, because the mean of its divisors is an integer number (20050252).

Almost surely, 2^40100503 is an apocalyptic number.

40100503 is a deficient number, since it is larger than the sum of its proper divisors (1).

40100503 is an equidigital number, since it uses as much as digits as its factorization.

40100503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 40100503 is about 6332.4957954980. The cubic root of 40100503 is about 342.2813792987.

Subtracting from 40100503 its sum of digits (13), we obtain a triangular number (40100490 = T₈₉₅₅).

Adding to 40100503 its reverse (30500104), we get a palindrome (70600607).

The spelling of 40100503 in words is "forty million, one hundred thousand, five hundred three".