126242003 has 4 divisors (see below), whose sum is σ = 128126280. Its totient is φ = 124357728.

The previous prime is 126241967. The next prime is 126242027. The reversal of 126242003 is 300242621.

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 126242003 - 2¹⁸ = 125979859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126242063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942038 + ... + 942171.

It is an arithmetic number, because the mean of its divisors is an integer number (32031570).

Almost surely, 2^126242003 is an apocalyptic number.

126242003 is a deficient number, since it is larger than the sum of its proper divisors (1884277).

126242003 is an equidigital number, since it uses as much as digits as its factorization.

126242003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884276.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 126242003 is about 11235.7466596573. The cubic root of 126242003 is about 501.6505493780.

Adding to 126242003 its reverse (300242621), we get a palindrome (426484624).

The spelling of 126242003 in words is "one hundred twenty-six million, two hundred forty-two thousand, three".