66124143 has 12 divisors (see below), whose sum is σ = 98094568. Its totient is φ = 42891120.

The previous prime is 66124139. The next prime is 66124171. The reversal of 66124143 is 34142166.

66124143 is a `hidden beast` number, since 6 + 612 + 4 + 1 + 43 = 666.

It is not a de Polignac number, because 66124143 - 2² = 66124139 is a prime.

It is a super-3 number, since 3×66124143³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66123143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98953 + ... + 99618.

Almost surely, 2^66124143 is an apocalyptic number.

66124143 is a deficient number, since it is larger than the sum of its proper divisors (31970425).

66124143 is a wasteful number, since it uses less digits than its factorization.

66124143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198614 (or 198611 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 66124143 is about 8131.6752886475. The cubic root of 66124143 is about 404.3772229890.

The spelling of 66124143 in words is "sixty-six million, one hundred twenty-four thousand, one hundred forty-three".