665042134 has 8 divisors (see below), whose sum is σ = 1012452408. Its totient is φ = 327558000.

The previous prime is 665042113. The next prime is 665042137. The reversal of 665042134 is 431240566.

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 = 665042096 and 665042105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665042137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2481367 + ... + 2481634.

It is an arithmetic number, because the mean of its divisors is an integer number (126556551).

Almost surely, 2^665042134 is an apocalyptic number.

665042134 is a deficient number, since it is larger than the sum of its proper divisors (347410274).

665042134 is a wasteful number, since it uses less digits than its factorization.

665042134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963070.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 665042134 is about 25788.4108467350. The cubic root of 665042134 is about 872.8703075858.

It can be divided in two parts, 6650 and 42134, that added together give a palindrome (48784).

The spelling of 665042134 in words is "six hundred sixty-five million, forty-two thousand, one hundred thirty-four".