126523201 has 32 divisors (see below), whose sum is σ = 155520000. Its totient is φ = 100649472.

The previous prime is 126523181. The next prime is 126523213. The reversal of 126523201 is 102325621.

It is not a de Polignac number, because 126523201 - 2¹³ = 126515009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126523601) 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 31 ways as a sum of consecutive naturals, for example, 849075 + ... + 849223.

It is an arithmetic number, because the mean of its divisors is an integer number (4860000).

Almost surely, 2^126523201 is an apocalyptic number.

It is an amenable number.

126523201 is a deficient number, since it is larger than the sum of its proper divisors (28996799).

126523201 is a wasteful number, since it uses less digits than its factorization.

126523201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 126523201 is about 11248.2532421705. The cubic root of 126523201 is about 502.0227406723.

Adding to 126523201 its reverse (102325621), we get a palindrome (228848822).

The spelling of 126523201 in words is "one hundred twenty-six million, five hundred twenty-three thousand, two hundred one".