42354431 has 8 divisors (see below), whose sum is σ = 50509824. Its totient is φ = 34725240.

The previous prime is 42354427. The next prime is 42354437. The reversal of 42354431 is 13445324.

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

It is a cyclic number.

It is not a de Polignac number, because 42354431 - 2² = 42354427 is a prime.

It is a super-2 number, since 2×42354431² = 3587795650667522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 42354431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42354437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131375 + ... + 131696.

It is an arithmetic number, because the mean of its divisors is an integer number (6313728).

Almost surely, 2^42354431 is an apocalyptic number.

42354431 is a deficient number, since it is larger than the sum of its proper divisors (8155393).

42354431 is a wasteful number, since it uses less digits than its factorization.

42354431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263101.

The product of its digits is 5760, while the sum is 26.

The square root of 42354431 is about 6508.0281960053. The cubic root of 42354431 is about 348.5777138349.

Adding to 42354431 its reverse (13445324), we get a palindrome (55799755).

The spelling of 42354431 in words is "forty-two million, three hundred fifty-four thousand, four hundred thirty-one".