126503473 has 6 divisors (see below), whose sum is σ = 132243314. Its totient is φ = 121002816.

The previous prime is 126503453. The next prime is 126503479. The reversal of 126503473 is 374305621.

It can be written as a sum of positive squares in only one way, i.e., 126495009 + 8464 = 11247^2 + 92^2 .

It is not a de Polignac number, because 126503473 - 2⁵ = 126503441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126503479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119040 + ... + 120097.

Almost surely, 2^126503473 is an apocalyptic number.

It is an amenable number.

126503473 is a deficient number, since it is larger than the sum of its proper divisors (5739841).

126503473 is an equidigital number, since it uses as much as digits as its factorization.

126503473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239183 (or 239160 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 126503473 is about 11247.3762718245. The cubic root of 126503473 is about 501.9966468562.

The spelling of 126503473 in words is "one hundred twenty-six million, five hundred three thousand, four hundred seventy-three".