71945124 has 12 divisors (see below), whose sum is σ = 167871984. Its totient is φ = 23981704.

The previous prime is 71945117. The next prime is 71945129. The reversal of 71945124 is 42154917.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×71945124² = 10352201734750752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71945129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2997702 + ... + 2997725.

It is an arithmetic number, because the mean of its divisors is an integer number (13989332).

Almost surely, 2^71945124 is an apocalyptic number.

It is an amenable number.

71945124 is an abundant number, since it is smaller than the sum of its proper divisors (95926860).

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

71945124 is a wasteful number, since it uses less digits than its factorization.

71945124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5995434 (or 5995432 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 71945124 is about 8482.0471585579. The cubic root of 71945124 is about 415.9110463773.

The spelling of 71945124 in words is "seventy-one million, nine hundred forty-five thousand, one hundred twenty-four".