64481142 has 24 divisors (see below), whose sum is σ = 141753528. Its totient is φ = 19539520.

The previous prime is 64481141. The next prime is 64481171. The reversal of 64481142 is 24118446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64481141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43683 + ... + 45134.

It is an arithmetic number, because the mean of its divisors is an integer number (5906397).

Almost surely, 2^64481142 is an apocalyptic number.

64481142 is an abundant number, since it is smaller than the sum of its proper divisors (77272386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64481142 is a wasteful number, since it uses less digits than its factorization.

64481142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88844 (or 88833 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 64481142 is about 8030.0150684790. The cubic root of 64481142 is about 400.9998776956. Note that the first 3 decimals are identical.

Adding to 64481142 its reverse (24118446), we get a palindrome (88599588).

The spelling of 64481142 in words is "sixty-four million, four hundred eighty-one thousand, one hundred forty-two".