65145242 has 4 divisors (see below), whose sum is σ = 97717866. Its totient is φ = 32572620.

The previous prime is 65145221. The next prime is 65145251. The reversal of 65145242 is 24254156.

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., 65108761 + 36481 = 8069^2 + 191^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16286309 + ... + 16286312.

Almost surely, 2^65145242 is an apocalyptic number.

65145242 is a deficient number, since it is larger than the sum of its proper divisors (32572624).

65145242 is a wasteful number, since it uses less digits than its factorization.

65145242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32572623.

The product of its digits is 9600, while the sum is 29.

The square root of 65145242 is about 8071.2602485609. The cubic root of 65145242 is about 402.3718291024.

Adding to 65145242 its reverse (24254156), we get a palindrome (89399398).

The spelling of 65145242 in words is "sixty-five million, one hundred forty-five thousand, two hundred forty-two".