126197401 has 16 divisors (see below), whose sum is σ = 140662080. Its totient is φ = 112250880.

The previous prime is 126197377. The next prime is 126197429. The reversal of 126197401 is 104791621.

126197401 = 149² + 150² + ... + 725².

It is a cyclic number.

It is not a de Polignac number, because 126197401 - 2¹¹ = 126195353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126197441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218425 + ... + 219001.

It is an arithmetic number, because the mean of its divisors is an integer number (8791380).

Almost surely, 2^126197401 is an apocalyptic number.

126197401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126197401 is a deficient number, since it is larger than the sum of its proper divisors (14464679).

126197401 is a wasteful number, since it uses less digits than its factorization.

126197401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 126197401 is about 11233.7616585007. The cubic root of 126197401 is about 501.5914637784.

The spelling of 126197401 in words is "one hundred twenty-six million, one hundred ninety-seven thousand, four hundred one".