42351424 has 14 divisors (see below), whose sum is σ = 84041234. Its totient is φ = 21175680.

The previous prime is 42351391. The next prime is 42351427. The reversal of 42351424 is 42415324.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 13191424 = 5400^2 + 3632^2 .

It is a super-2 number, since 2×42351424² = 3587286229655552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42351427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330807 + ... + 330934.

Almost surely, 2^42351424 is an apocalyptic number.

It is an amenable number.

42351424 is a deficient number, since it is larger than the sum of its proper divisors (41689810).

42351424 is an equidigital number, since it uses as much as digits as its factorization.

42351424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661753 (or 661743 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 42351424 is about 6507.7971695498. The cubic root of 42351424 is about 348.5694644186.

Adding to 42351424 its reverse (42415324), we get a palindrome (84766748).

The spelling of 42351424 in words is "forty-two million, three hundred fifty-one thousand, four hundred twenty-four".