409040226242 has 6 divisors (see below), whose sum is σ = 613561696083. Its totient is φ = 204519660882.

The previous prime is 409040226233. The next prime is 409040226263. The reversal of 409040226242 is 242622040904.

It can be written as a sum of positive squares in only one way, i.e., 204520113121 + 204520113121 = 452239^2 + 452239^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=452239.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 678359 + ... + 1130597.

Almost surely, 2^409040226242 is an apocalyptic number.

409040226242 is a deficient number, since it is larger than the sum of its proper divisors (204521469841).

409040226242 is an frugal number, since it uses more digits than its factorization.

409040226242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904480 (or 452241 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 409040226242 in words is "four hundred nine billion, forty million, two hundred twenty-six thousand, two hundred forty-two".