1066542464 has 128 divisors (see below), whose sum is σ = 2490717600. Its totient is φ = 450330624.

The previous prime is 1066542461. The next prime is 1066542473. The reversal of 1066542464 is 4642456601.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1066542464² = 2275025655030382592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066542461) 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 15 ways as a sum of consecutive naturals, for example, 1046147 + ... + 1047165.

Almost surely, 2^1066542464 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 1066542464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245358800).

1066542464 is an abundant number, since it is smaller than the sum of its proper divisors (1424175136).

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

1066542464 is a wasteful number, since it uses less digits than its factorization.

1066542464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 1066542464 is about 32657.9617245167. The cubic root of 1066542464 is about 1021.7062509542.

The spelling of 1066542464 in words is "one billion, sixty-six million, five hundred forty-two thousand, four hundred sixty-four".