431420442 has 8 divisors (see below), whose sum is σ = 862840896. Its totient is φ = 143806812.

The previous prime is 431420399. The next prime is 431420461. The reversal of 431420442 is 244024134.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

431420442 is an admirable number.

It is a super-2 number, since 2×431420442² = 372247195550950728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35951698 + ... + 35951709.

It is an arithmetic number, because the mean of its divisors is an integer number (107855112).

Almost surely, 2^431420442 is an apocalyptic number.

431420442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431420442 is a wasteful number, since it uses less digits than its factorization.

431420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71903412.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 431420442 is about 20770.6630130095. The cubic root of 431420442 is about 755.6144243331.

Adding to 431420442 its reverse (244024134), we get a palindrome (675444576).

The spelling of 431420442 in words is "four hundred thirty-one million, four hundred twenty thousand, four hundred forty-two".