126201257 has 24 divisors (see below), whose sum is σ = 157795776. Its totient is φ = 98819136.

The previous prime is 126201233. The next prime is 126201263. The reversal of 126201257 is 752102621.

It is not a de Polignac number, because 126201257 - 2¹⁴ = 126184873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126201227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126083 + ... + 127079.

It is an arithmetic number, because the mean of its divisors is an integer number (6574824).

Almost surely, 2^126201257 is an apocalyptic number.

It is an amenable number.

126201257 is a deficient number, since it is larger than the sum of its proper divisors (31594519).

126201257 is a wasteful number, since it uses less digits than its factorization.

126201257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 126201257 is about 11233.9332826931. The cubic root of 126201257 is about 501.5965724863.

Adding to 126201257 its reverse (752102621), we get a palindrome (878303878).

The spelling of 126201257 in words is "one hundred twenty-six million, two hundred one thousand, two hundred fifty-seven".