126356503 has 32 divisors (see below), whose sum is σ = 164699136. Its totient is φ = 94203648.

The previous prime is 126356473. The next prime is 126356507. The reversal of 126356503 is 305653621.

It is not a de Polignac number, because 126356503 - 2¹⁷ = 126225431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126356507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152376 + ... + 153202.

It is an arithmetic number, because the mean of its divisors is an integer number (5146848).

Almost surely, 2^126356503 is an apocalyptic number.

126356503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

126356503 is a deficient number, since it is larger than the sum of its proper divisors (38342633).

126356503 is a wasteful number, since it uses less digits than its factorization.

126356503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 126356503 is about 11240.8408493315. The cubic root of 126356503 is about 501.8021672490.

The spelling of 126356503 in words is "one hundred twenty-six million, three hundred fifty-six thousand, five hundred three".