408242242 has 8 divisors (see below), whose sum is σ = 615747132. Its totient is φ = 202993200.

The previous prime is 408242221. The next prime is 408242273. The reversal of 408242242 is 242242804.

It can be written as a sum of positive squares in 2 ways, for example, as 356416641 + 51825601 = 18879^2 + 7199^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 408242242.

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, 563509 + ... + 564232.

Almost surely, 2^408242242 is an apocalyptic number.

408242242 is a deficient number, since it is larger than the sum of its proper divisors (207504890).

408242242 is a wasteful number, since it uses less digits than its factorization.

408242242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127924.

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 408242242 is about 20205.0053699572. The cubic root of 408242242 is about 741.8327119762.

The spelling of 408242242 in words is "four hundred eight million, two hundred forty-two thousand, two hundred forty-two".