409662142 has 4 divisors (see below), whose sum is σ = 614493216. Its totient is φ = 204831070.

The previous prime is 409662139. The next prime is 409662157. The reversal of 409662142 is 241266904.

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

It is a junction number, because it is equal to n+sod(n) for n = 409662098 and 409662107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102415534 + ... + 102415537.

It is an arithmetic number, because the mean of its divisors is an integer number (153623304).

Almost surely, 2^409662142 is an apocalyptic number.

409662142 is a deficient number, since it is larger than the sum of its proper divisors (204831074).

409662142 is a wasteful number, since it uses less digits than its factorization.

409662142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204831073.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 409662142 is about 20240.1122032463. The cubic root of 409662142 is about 742.6917684598.

The spelling of 409662142 in words is "four hundred nine million, six hundred sixty-two thousand, one hundred forty-two".