149940503 has 4 divisors (see below), whose sum is σ = 149981088. Its totient is φ = 149899920.

The previous prime is 149940487. The next prime is 149940523. The reversal of 149940503 is 305049941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149940503 - 2⁴ = 149940487 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 (149940523) 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 in 3 ways as a sum of consecutive naturals, for example, 14126 + ... + 22347.

It is an arithmetic number, because the mean of its divisors is an integer number (37495272).

Almost surely, 2^149940503 is an apocalyptic number.

149940503 is a deficient number, since it is larger than the sum of its proper divisors (40585).

149940503 is an equidigital number, since it uses as much as digits as its factorization.

149940503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40584.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 149940503 is about 12245.0195181551. The cubic root of 149940503 is about 531.2590253046.

The spelling of 149940503 in words is "one hundred forty-nine million, nine hundred forty thousand, five hundred three".