431400242 has 32 divisors (see below), whose sum is σ = 817969152. Its totient is φ = 166048704.

The previous prime is 431400227. The next prime is 431400269. The reversal of 431400242 is 242004134.

It is a super-2 number, since 2×431400242² = 372212337595317128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25298 + ... + 38765.

It is an arithmetic number, because the mean of its divisors is an integer number (25561536).

Almost surely, 2^431400242 is an apocalyptic number.

431400242 is a deficient number, since it is larger than the sum of its proper divisors (386568910).

431400242 is a wasteful number, since it uses less digits than its factorization.

431400242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64122.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 431400242 is about 20770.1767445537. The cubic root of 431400242 is about 755.6026310041.

Adding to 431400242 its reverse (242004134), we get a palindrome (673404376).

The spelling of 431400242 in words is "four hundred thirty-one million, four hundred thousand, two hundred forty-two".