431542 has 4 divisors (see below), whose sum is σ = 647316. Its totient is φ = 215770.

The previous prime is 431533. The next prime is 431567. The reversal of 431542 is 245134.

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

It is a congruent number.

It is an unprimeable number.

431542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 107884 + ... + 107887.

It is an arithmetic number, because the mean of its divisors is an integer number (161829).

2⁴³¹⁵⁴² is an apocalyptic number.

431542 is a deficient number, since it is larger than the sum of its proper divisors (215774).

431542 is a wasteful number, since it uses less digits than its factorization.

431542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215773.

The product of its digits is 480, while the sum is 19.

The square root of 431542 is about 656.9185642072. The cubic root of 431542 is about 75.5685385545.

Adding to 431542 its reverse (245134), we get a palindrome (676676).

The spelling of 431542 in words is "four hundred thirty-one thousand, five hundred forty-two".