126211451 has 16 divisors (see below), whose sum is σ = 140343840. Its totient is φ = 112949760.

The previous prime is 126211429. The next prime is 126211469. The reversal of 126211451 is 154112621.

It is a cyclic number.

It is not a de Polignac number, because 126211451 - 2²⁶ = 59102587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126211411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31121 + ... + 34941.

It is an arithmetic number, because the mean of its divisors is an integer number (8771490).

Almost surely, 2^126211451 is an apocalyptic number.

126211451 is a deficient number, since it is larger than the sum of its proper divisors (14132389).

126211451 is a wasteful number, since it uses less digits than its factorization.

126211451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934.

The product of its digits is 480, while the sum is 23.

The square root of 126211451 is about 11234.3869881716. The cubic root of 126211451 is about 501.6100777342.

The spelling of 126211451 in words is "one hundred twenty-six million, two hundred eleven thousand, four hundred fifty-one".