406073521442 has 4 divisors (see below), whose sum is σ = 609110282166. Its totient is φ = 203036760720.

The previous prime is 406073521439. The next prime is 406073521453. The reversal of 406073521442 is 244125370604.

It is a happy number.

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., 254589875761 + 151483645681 = 504569^2 + 389209^2 .

It is a junction number, because it is equal to n+sod(n) for n = 406073521396 and 406073521405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101518380359 + ... + 101518380362.

Almost surely, 2^406073521442 is an apocalyptic number.

406073521442 is a deficient number, since it is larger than the sum of its proper divisors (203036760724).

406073521442 is a wasteful number, since it uses less digits than its factorization.

406073521442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203036760723.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 406073521442 in words is "four hundred six billion, seventy-three million, five hundred twenty-one thousand, four hundred forty-two".