126898645 has 4 divisors (see below), whose sum is σ = 152278380. Its totient is φ = 101518912.

The previous prime is 126898631. The next prime is 126898669. The reversal of 126898645 is 546898621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546898621 = 31 ⋅17641891.

It can be written as a sum of positive squares in 2 ways, for example, as 63266116 + 63632529 = 7954^2 + 7977^2 .

It is a cyclic number.

It is not a de Polignac number, because 126898645 - 2⁹ = 126898133 is a prime.

It is a super-2 number, since 2×126898645² = 32206532205672050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12689860 + ... + 12689869.

It is an arithmetic number, because the mean of its divisors is an integer number (38069595).

Almost surely, 2^126898645 is an apocalyptic number.

It is an amenable number.

126898645 is a deficient number, since it is larger than the sum of its proper divisors (25379735).

126898645 is an equidigital number, since it uses as much as digits as its factorization.

126898645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25379734.

The product of its digits is 829440, while the sum is 49.

The square root of 126898645 is about 11264.9298710644. The cubic root of 126898645 is about 502.5188164864.

The spelling of 126898645 in words is "one hundred twenty-six million, eight hundred ninety-eight thousand, six hundred forty-five".