126063381 has 32 divisors (see below), whose sum is σ = 183306240. Its totient is φ = 76766976.

The previous prime is 126063367. The next prime is 126063419. The reversal of 126063381 is 183360621.

126063381 is a nontrivial binomial coefficient, being equal to C(15879, 2).

It is not a de Polignac number, because 126063381 - 2⁵ = 126063349 is a prime.

It is a super-4 number, since 4×126063381⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126063331) 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 31 ways as a sum of consecutive naturals, for example, 269710 + ... + 270176.

It is an arithmetic number, because the mean of its divisors is an integer number (5728320).

Almost surely, 2^126063381 is an apocalyptic number.

126063381 is the 15878-th triangular number.

It is an amenable number.

126063381 is a deficient number, since it is larger than the sum of its proper divisors (57242859).

126063381 is a wasteful number, since it uses less digits than its factorization.

126063381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 126063381 is about 11227.7950195041. The cubic root of 126063381 is about 501.4138396798.

The spelling of 126063381 in words is "one hundred twenty-six million, sixty-three thousand, three hundred eighty-one".