80426 has 4 divisors (see below), whose sum is σ = 120642. Its totient is φ = 40212.

The previous prime is 80407. The next prime is 80429. The reversal of 80426 is 62408.

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., 70225 + 10201 = 265^2 + 101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80398 and 80407.

It is not an unprimeable number, because it can be changed into a prime (80429) by changing a digit.

80426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20105 + ... + 20108.

2⁸⁰⁴²⁶ is an apocalyptic number.

80426 is a deficient number, since it is larger than the sum of its proper divisors (40216).

80426 is a wasteful number, since it uses less digits than its factorization.

80426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40215.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 80426 is about 283.5947813342. The cubic root of 80426 is about 43.1650408760.

The spelling of 80426 in words is "eighty thousand, four hundred twenty-six".