64433242 has 4 divisors (see below), whose sum is σ = 96649866. Its totient is φ = 32216620.

The previous prime is 64433233. The next prime is 64433249. The reversal of 64433242 is 24233446.

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

It can be written as a sum of positive squares in only one way, i.e., 64304361 + 128881 = 8019^2 + 359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64433242.

It is not an unprimeable number, because it can be changed into a prime (64433249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16108309 + ... + 16108312.

Almost surely, 2^64433242 is an apocalyptic number.

64433242 is a deficient number, since it is larger than the sum of its proper divisors (32216624).

64433242 is a wasteful number, since it uses less digits than its factorization.

64433242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32216623.

The product of its digits is 13824, while the sum is 28.

The square root of 64433242 is about 8027.0319545894. The cubic root of 64433242 is about 400.9005584646.

Adding to 64433242 its reverse (24233446), we get a palindrome (88666688).

The spelling of 64433242 in words is "sixty-four million, four hundred thirty-three thousand, two hundred forty-two".