126597001 has 4 divisors (see below), whose sum is σ = 126639172. Its totient is φ = 126554832.

The previous prime is 126596983. The next prime is 126597007. The reversal of 126597001 is 100795621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100795621 = 239 ⋅421739.

It can be written as a sum of positive squares in 2 ways, for example, as 80084601 + 46512400 = 8949^2 + 6820^2 .

It is a cyclic number.

It is not a de Polignac number, because 126597001 - 2¹¹ = 126594953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126597007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16206 + ... + 22711.

It is an arithmetic number, because the mean of its divisors is an integer number (31659793).

Almost surely, 2^126597001 is an apocalyptic number.

It is an amenable number.

126597001 is a deficient number, since it is larger than the sum of its proper divisors (42171).

126597001 is an equidigital number, since it uses as much as digits as its factorization.

126597001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42170.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 126597001 is about 11251.5332732921. The cubic root of 126597001 is about 502.1203303549.

The spelling of 126597001 in words is "one hundred twenty-six million, five hundred ninety-seven thousand, one".