409208452842 has 32 divisors (see below), whose sum is σ = 935372390400. Its totient is φ = 116911852848.

The previous prime is 409208452841. The next prime is 409208452931. The reversal of 409208452842 is 248254802904.

It is a junction number, because it is equal to n+sod(n) for n = 409208452791 and 409208452800.

It is not an unprimeable number, because it can be changed into a prime (409208452841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892759 + ... + 1270997.

It is an arithmetic number, because the mean of its divisors is an integer number (29230387200).

Almost surely, 2^409208452842 is an apocalyptic number.

409208452842 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

409208452842 is an abundant number, since it is smaller than the sum of its proper divisors (526163937558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409208452842 is a wasteful number, since it uses less digits than its factorization.

409208452842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404010.

The product of its (nonzero) digits is 1474560, while the sum is 48.

The spelling of 409208452842 in words is "four hundred nine billion, two hundred eight million, four hundred fifty-two thousand, eight hundred forty-two".