408242026 has 8 divisors (see below), whose sum is σ = 612595620. Its totient is φ = 204043488.

The previous prime is 408242017. The next prime is 408242033. The reversal of 408242026 is 620242804.

It is a Cunningham number, because it is equal to 20205²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 408242025 + 1 = 20205^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 408241985 and 408242003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31941 + ... + 42856.

Almost surely, 2^408242026 is an apocalyptic number.

408242026 is a deficient number, since it is larger than the sum of its proper divisors (204353594).

408242026 is a wasteful number, since it uses less digits than its factorization.

408242026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77528.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 408242026 is about 20205.0000247463. Note that the first 4 decimals coincide. The cubic root of 408242026 is about 741.8325811422.

The spelling of 408242026 in words is "four hundred eight million, two hundred forty-two thousand, twenty-six".