80770442 has 4 divisors (see below), whose sum is σ = 121155666. Its totient is φ = 40385220.

The previous prime is 80770429. The next prime is 80770447. The reversal of 80770442 is 24407708.

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

It can be written as a sum of positive squares in only one way, i.e., 77598481 + 3171961 = 8809^2 + 1781^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80770399 and 80770408.

It is not an unprimeable number, because it can be changed into a prime (80770447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20192609 + ... + 20192612.

Almost surely, 2^80770442 is an apocalyptic number.

80770442 is a deficient number, since it is larger than the sum of its proper divisors (40385224).

80770442 is a wasteful number, since it uses less digits than its factorization.

80770442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40385223.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 80770442 is about 8987.2377291357. The cubic root of 80770442 is about 432.2657437023.

The spelling of 80770442 in words is "eighty million, seven hundred seventy thousand, four hundred forty-two".