408453242 has 4 divisors (see below), whose sum is σ = 612679866. Its totient is φ = 204226620.

The previous prime is 408453233. The next prime is 408453257. The reversal of 408453242 is 242354804.

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., 395572321 + 12880921 = 19889^2 + 3589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 408453199 and 408453208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102113309 + ... + 102113312.

Almost surely, 2^408453242 is an apocalyptic number.

408453242 is a deficient number, since it is larger than the sum of its proper divisors (204226624).

408453242 is a wasteful number, since it uses less digits than its factorization.

408453242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204226623.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 408453242 is about 20210.2261738952. The cubic root of 408453242 is about 741.9604953745.

The spelling of 408453242 in words is "four hundred eight million, four hundred fifty-three thousand, two hundred forty-two".