64642342 has 8 divisors (see below), whose sum is σ = 97175232. Its totient is φ = 32250600.

The previous prime is 64642321. The next prime is 64642379. The reversal of 64642342 is 24324646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34134 + ... + 35977.

It is an arithmetic number, because the mean of its divisors is an integer number (12146904).

Almost surely, 2^64642342 is an apocalyptic number.

64642342 is a deficient number, since it is larger than the sum of its proper divisors (32532890).

64642342 is a wasteful number, since it uses less digits than its factorization.

64642342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70574.

The product of its digits is 27648, while the sum is 31.

The square root of 64642342 is about 8040.0461441462. The cubic root of 64642342 is about 401.3337602659. Note that the first 3 decimals are identical.

Adding to 64642342 its reverse (24324646), we get a palindrome (88966988).

The spelling of 64642342 in words is "sixty-four million, six hundred forty-two thousand, three hundred forty-two".