42311432 has 8 divisors (see below), whose sum is σ = 79333950. Its totient is φ = 21155712.

The previous prime is 42311431. The next prime is 42311443. The reversal of 42311432 is 23411324.

It can be written as a sum of positive squares in only one way, i.e., 23872996 + 18438436 = 4886^2 + 4294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (42311431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2644457 + ... + 2644472.

Almost surely, 2^42311432 is an apocalyptic number.

It is an amenable number.

42311432 is a deficient number, since it is larger than the sum of its proper divisors (37022518).

42311432 is a wasteful number, since it uses less digits than its factorization.

42311432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288935 (or 5288931 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 42311432 is about 6504.7238219620. The cubic root of 42311432 is about 348.4597130510.

Adding to 42311432 its reverse (23411324), we get a palindrome (65722756).

The spelling of 42311432 in words is "forty-two million, three hundred eleven thousand, four hundred thirty-two".