126200503 has 16 divisors (see below), whose sum is σ = 156987936. Its totient is φ = 99671040.

The previous prime is 126200491. The next prime is 126200509. The reversal of 126200503 is 305002621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 126200503 - 2¹⁷ = 126069431 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 (126200509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23526 + ... + 28387.

It is an arithmetic number, because the mean of its divisors is an integer number (9811746).

Almost surely, 2^126200503 is an apocalyptic number.

126200503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

126200503 is a deficient number, since it is larger than the sum of its proper divisors (30787433).

126200503 is a wasteful number, since it uses less digits than its factorization.

126200503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51954.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 126200503 is about 11233.8997236044. The cubic root of 126200503 is about 501.5955735407.

The spelling of 126200503 in words is "one hundred twenty-six million, two hundred thousand, five hundred three".