80142940 has 12 divisors (see below), whose sum is σ = 168300216. Its totient is φ = 32057168.

The previous prime is 80142929. The next prime is 80142941. The reversal of 80142940 is 4924108.

It is a junction number, because it is equal to n+sod(n) for n = 80142899 and 80142908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80142941) 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 3 ways as a sum of consecutive naturals, for example, 2003554 + ... + 2003593.

It is an arithmetic number, because the mean of its divisors is an integer number (14025018).

Almost surely, 2^80142940 is an apocalyptic number.

It is an amenable number.

80142940 is an abundant number, since it is smaller than the sum of its proper divisors (88157276).

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

80142940 is a wasteful number, since it uses less digits than its factorization.

80142940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007156 (or 4007154 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 80142940 is about 8952.2589328057. The cubic root of 80142940 is about 431.1434143927.

The spelling of 80142940 in words is "eighty million, one hundred forty-two thousand, nine hundred forty".