64530142 has 4 divisors (see below), whose sum is σ = 96795216. Its totient is φ = 32265070.

The previous prime is 64530091. The next prime is 64530149. The reversal of 64530142 is 24103546.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64530149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16132534 + ... + 16132537.

It is an arithmetic number, because the mean of its divisors is an integer number (24198804).

Almost surely, 2^64530142 is an apocalyptic number.

64530142 is a deficient number, since it is larger than the sum of its proper divisors (32265074).

64530142 is a wasteful number, since it uses less digits than its factorization.

64530142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32265073.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 64530142 is about 8033.0655418713. The cubic root of 64530142 is about 401.1014268634.

Adding to 64530142 its reverse (24103546), we get a palindrome (88633688).

The spelling of 64530142 in words is "sixty-four million, five hundred thirty thousand, one hundred forty-two".