71223683042 has 6 divisors (see below), whose sum is σ = 106836090699. Its totient is φ = 35611652810.

The previous prime is 71223683023. The next prime is 71223683057. The reversal of 71223683042 is 24038632217.

It can be written as a sum of positive squares in only one way, i.e., 35611841521 + 35611841521 = 188711^2 + 188711^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188711.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71223682987 and 71223683005.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 283067 + ... + 471777.

Almost surely, 2^71223683042 is an apocalyptic number.

71223683042 is a deficient number, since it is larger than the sum of its proper divisors (35612407657).

71223683042 is an frugal number, since it uses more digits than its factorization.

71223683042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377424 (or 188713 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 71223683042 in words is "seventy-one billion, two hundred twenty-three million, six hundred eighty-three thousand, forty-two".