65623042 has 8 divisors (see below), whose sum is σ = 100835532. Its totient is φ = 32011200.

The previous prime is 65623021. The next prime is 65623049. The reversal of 65623042 is 24032656.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65593801 + 29241 = 8099^2 + 171^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 65623042.

It is not an unprimeable number, because it can be changed into a prime (65623049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400059 + ... + 400222.

Almost surely, 2^65623042 is an apocalyptic number.

65623042 is a deficient number, since it is larger than the sum of its proper divisors (35212490).

65623042 is a wasteful number, since it uses less digits than its factorization.

65623042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800324.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 65623042 is about 8100.8050217247. The cubic root of 65623042 is about 403.3531499192.

Adding to 65623042 its reverse (24032656), we get a palindrome (89655698).

It can be divided in two parts, 6562 and 3042, that added together give a square (9604 = 98²).

The spelling of 65623042 in words is "sixty-five million, six hundred twenty-three thousand, forty-two".