80137742 has 4 divisors (see below), whose sum is σ = 120206616. Its totient is φ = 40068870.

The previous prime is 80137741. The next prime is 80137747. The reversal of 80137742 is 24773108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 80137699 and 80137708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80137741) 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 as a sum of consecutive naturals, namely, 20034434 + ... + 20034437.

It is an arithmetic number, because the mean of its divisors is an integer number (30051654).

Almost surely, 2^80137742 is an apocalyptic number.

80137742 is a deficient number, since it is larger than the sum of its proper divisors (40068874).

80137742 is a wasteful number, since it uses less digits than its factorization.

80137742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40068873.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 80137742 is about 8951.9686103114. The cubic root of 80137742 is about 431.1340929981.

The spelling of 80137742 in words is "eighty million, one hundred thirty-seven thousand, seven hundred forty-two".