126520201 has 4 divisors (see below), whose sum is σ = 126582912. Its totient is φ = 126457492.

The previous prime is 126520189. The next prime is 126520213. The reversal of 126520201 is 102025621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (126520189) and next prime (126520213).

It is a cyclic number.

It is not a de Polignac number, because 126520201 - 2⁷ = 126520073 is a prime.

It is a super-2 number, since 2×126520201² = 32014722522160802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126520271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28225 + ... + 32398.

It is an arithmetic number, because the mean of its divisors is an integer number (31645728).

Almost surely, 2^126520201 is an apocalyptic number.

It is an amenable number.

126520201 is a deficient number, since it is larger than the sum of its proper divisors (62711).

126520201 is an equidigital number, since it uses as much as digits as its factorization.

126520201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62710.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 126520201 is about 11248.1198873412. The cubic root of 126520201 is about 502.0187728095.

Adding to 126520201 its reverse (102025621), we get a palindrome (228545822).

The spelling of 126520201 in words is "one hundred twenty-six million, five hundred twenty thousand, two hundred one".