64144342 has 16 divisors (see below), whose sum is σ = 101622960. Its totient is φ = 30281472.

The previous prime is 64144219. The next prime is 64144343. The reversal of 64144342 is 24344146.

It is a super-2 number, since 2×64144342² = 8228993221225928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64144342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64144343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9198 + ... + 14590.

It is an arithmetic number, because the mean of its divisors is an integer number (6351435).

Almost surely, 2^64144342 is an apocalyptic number.

64144342 is a deficient number, since it is larger than the sum of its proper divisors (37478618).

64144342 is a wasteful number, since it uses less digits than its factorization.

64144342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727.

The product of its digits is 9216, while the sum is 28.

The square root of 64144342 is about 8009.0162941525. The cubic root of 64144342 is about 400.3004867128.

Adding to 64144342 its reverse (24344146), we get a palindrome (88488488).

The spelling of 64144342 in words is "sixty-four million, one hundred forty-four thousand, three hundred forty-two".