406555042 has 8 divisors (see below), whose sum is σ = 611561196. Its totient is φ = 202701312.

The previous prime is 406554977. The next prime is 406555043. The reversal of 406555042 is 240555604.

It can be written as a sum of positive squares in 2 ways, for example, as 363245481 + 43309561 = 19059^2 + 6581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 406554995 and 406555013.

It is not an unprimeable number, because it can be changed into a prime (406555043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287223 + ... + 288634.

Almost surely, 2^406555042 is an apocalyptic number.

406555042 is a deficient number, since it is larger than the sum of its proper divisors (205006154).

406555042 is a wasteful number, since it uses less digits than its factorization.

406555042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576212.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 406555042 is about 20163.2101114877. The cubic root of 406555042 is about 740.8093421553.

The spelling of 406555042 in words is "four hundred six million, five hundred fifty-five thousand, forty-two".