64242142 has 4 divisors (see below), whose sum is σ = 96363216. Its totient is φ = 32121070.

The previous prime is 64242131. The next prime is 64242169. The reversal of 64242142 is 24124246.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24124246 = 2 ⋅12062123.

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, 16060534 + ... + 16060537.

It is an arithmetic number, because the mean of its divisors is an integer number (24090804).

Almost surely, 2^64242142 is an apocalyptic number.

64242142 is a deficient number, since it is larger than the sum of its proper divisors (32121074).

64242142 is a wasteful number, since it uses less digits than its factorization.

64242142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32121073.

The product of its digits is 3072, while the sum is 25.

The square root of 64242142 is about 8015.1195873798. The cubic root of 64242142 is about 400.5038276279.

Adding to 64242142 its reverse (24124246), we get a palindrome (88366388).

The spelling of 64242142 in words is "sixty-four million, two hundred forty-two thousand, one hundred forty-two".