126643446 has 16 divisors (see below), whose sum is σ = 281430000. Its totient is φ = 42214464.

The previous prime is 126643423. The next prime is 126643453. The reversal of 126643446 is 644346621.

126643446 is a `hidden beast` number, since 1 + 2 + 6 + 643 + 4 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 126643446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172571 + ... + 1172678.

It is an arithmetic number, because the mean of its divisors is an integer number (17589375).

Almost surely, 2^126643446 is an apocalyptic number.

126643446 is an abundant number, since it is smaller than the sum of its proper divisors (154786554).

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

126643446 is a wasteful number, since it uses less digits than its factorization.

126643446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345260 (or 2345254 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 126643446 is about 11253.5970249516. The cubic root of 126643446 is about 502.1817276160.

It can be divided in two parts, 12664 and 3446, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 126643446 in words is "one hundred twenty-six million, six hundred forty-three thousand, four hundred forty-six".