126231664 has 80 divisors (see below), whose sum is σ = 288731520. Its totient is φ = 52899840.

The previous prime is 126231653. The next prime is 126231683. The reversal of 126231664 is 466132621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101929 + ... + 103159.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 2^126231664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126231664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144365760).

126231664 is an abundant number, since it is smaller than the sum of its proper divisors (162499856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126231664 is a wasteful number, since it uses less digits than its factorization.

126231664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1292 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 126231664 is about 11235.2865562032. The cubic root of 126231664 is about 501.6368542356.

The spelling of 126231664 in words is "one hundred twenty-six million, two hundred thirty-one thousand, six hundred sixty-four".