126888621 has 8 divisors (see below), whose sum is σ = 170517504. Its totient is φ = 83926080.

The previous prime is 126888617. The next prime is 126888637.

126888621 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126888621 - 2² = 126888617 is a prime.

It is a super-2 number, since 2×126888621² = 32201444278563282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126888661) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 166140 + ... + 166901.

It is an arithmetic number, because the mean of its divisors is an integer number (21314688).

Almost surely, 2^126888621 is an apocalyptic number.

It is an amenable number.

126888621 is a deficient number, since it is larger than the sum of its proper divisors (43628883).

126888621 is a wasteful number, since it uses less digits than its factorization.

126888621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333171.

The product of its digits is 73728, while the sum is 42.

The square root of 126888621 is about 11264.4849416207. The cubic root of 126888621 is about 502.5055844532.

The spelling of 126888621 in words is "one hundred twenty-six million, eight hundred eighty-eight thousand, six hundred twenty-one".