64236142 has 4 divisors (see below), whose sum is σ = 96354216. Its totient is φ = 32118070.

The previous prime is 64236127. The next prime is 64236163. The reversal of 64236142 is 24163246.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64236142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16059034 + ... + 16059037.

It is an arithmetic number, because the mean of its divisors is an integer number (24088554).

Almost surely, 2^64236142 is an apocalyptic number.

64236142 is a deficient number, since it is larger than the sum of its proper divisors (32118074).

64236142 is a wasteful number, since it uses less digits than its factorization.

64236142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32118073.

The product of its digits is 6912, while the sum is 28.

The square root of 64236142 is about 8014.7452860337. The cubic root of 64236142 is about 400.4913586695.

Adding to 64236142 its reverse (24163246), we get a palindrome (88399388).

The spelling of 64236142 in words is "sixty-four million, two hundred thirty-six thousand, one hundred forty-two".