80649042 has 48 divisors (see below), whose sum is σ = 169874496. Its totient is φ = 25519200.

The previous prime is 80649031. The next prime is 80649043. The reversal of 80649042 is 24094608.

It is a junction number, because it is equal to n+sod(n) for n = 80648994 and 80649012.

It is not an unprimeable number, because it can be changed into a prime (80649043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409288 + ... + 409484.

It is an arithmetic number, because the mean of its divisors is an integer number (3539052).

Almost surely, 2^80649042 is an apocalyptic number.

80649042 is an abundant number, since it is smaller than the sum of its proper divisors (89225454).

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

80649042 is a wasteful number, since it uses less digits than its factorization.

80649042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 80649042 is about 8980.4811675099. The cubic root of 80649042 is about 432.0490663576.

The spelling of 80649042 in words is "eighty million, six hundred forty-nine thousand, forty-two".