66452042 has 8 divisors (see below), whose sum is σ = 99811332. Its totient is φ = 33181600.

The previous prime is 66452039. The next prime is 66452053. The reversal of 66452042 is 24025466.

It can be written as a sum of positive squares in 2 ways, for example, as 65108761 + 1343281 = 8069^2 + 1159^2 .

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 = 66451996 and 66452014.

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 in 3 ways as a sum of consecutive naturals, for example, 20309 + ... + 23352.

Almost surely, 2^66452042 is an apocalyptic number.

66452042 is a deficient number, since it is larger than the sum of its proper divisors (33359290).

66452042 is a wasteful number, since it uses less digits than its factorization.

66452042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44424.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 66452042 is about 8151.8121911634. The cubic root of 66452042 is about 405.0445350609.

The spelling of 66452042 in words is "sixty-six million, four hundred fifty-two thousand, forty-two".