71973280142 has 24 divisors (see below), whose sum is σ = 110392217280. Its totient is φ = 35193381920.

The previous prime is 71973280139. The next prime is 71973280147. The reversal of 71973280142 is 24108237917.

It is a junction number, because it is equal to n+sod(n) for n = 71973280093 and 71973280102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71973280147) 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, 6351842 + ... + 6363162.

It is an arithmetic number, because the mean of its divisors is an integer number (4599675720).

Almost surely, 2^71973280142 is an apocalyptic number.

71973280142 is a deficient number, since it is larger than the sum of its proper divisors (38418937138).

71973280142 is a wasteful number, since it uses less digits than its factorization.

71973280142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856 (or 12809 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 71973280142 in words is "seventy-one billion, nine hundred seventy-three million, two hundred eighty thousand, one hundred forty-two".