3720020503 has 2 divisors, whose sum is σ = 3720020504. Its totient is φ = 3720020502.

The previous prime is 3720020489. The next prime is 3720020539. The reversal of 3720020503 is 3050200273.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3050200273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3720020503 - 2⁵ = 3720020471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3720020543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860010251 + 1860010252.

It is an arithmetic number, because the mean of its divisors is an integer number (1860010252).

Almost surely, 2^3720020503 is an apocalyptic number.

3720020503 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720020503 is an equidigital number, since it uses as much as digits as its factorization.

3720020503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 3720020503 is about 60991.9708076399. The cubic root of 3720020503 is about 1549.4650256447.

Adding to 3720020503 its reverse (3050200273), we get a palindrome (6770220776).

The spelling of 3720020503 in words is "three billion, seven hundred twenty million, twenty thousand, five hundred three".