64534142 has 32 divisors (see below), whose sum is σ = 107803872. Its totient is φ = 28836864.

The previous prime is 64534111. The next prime is 64534147. The reversal of 64534142 is 24143546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64534147) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 53498 + ... + 54690.

It is an arithmetic number, because the mean of its divisors is an integer number (3368871).

Almost surely, 2^64534142 is an apocalyptic number.

64534142 is a deficient number, since it is larger than the sum of its proper divisors (43269730).

64534142 is a wasteful number, since it uses less digits than its factorization.

64534142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292.

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

The square root of 64534142 is about 8033.3145089683. The cubic root of 64534142 is about 401.1097143216.

Adding to 64534142 its reverse (24143546), we get a palindrome (88677688).

The spelling of 64534142 in words is "sixty-four million, five hundred thirty-four thousand, one hundred forty-two".