42552424 has 16 divisors (see below), whose sum is σ = 81732420. Its totient is φ = 20757120.

The previous prime is 42552409. The next prime is 42552427. The reversal of 42552424 is 42425524.

It can be written as a sum of positive squares in 2 ways, for example, as 40729924 + 1822500 = 6382^2 + 1350^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42552392 and 42552401.

It is not an unprimeable number, because it can be changed into a prime (42552427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64539 + ... + 65194.

Almost surely, 2^42552424 is an apocalyptic number.

It is an amenable number.

42552424 is a deficient number, since it is larger than the sum of its proper divisors (39179996).

42552424 is a wasteful number, since it uses less digits than its factorization.

42552424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129780 (or 129776 counting only the distinct ones).

The product of its digits is 12800, while the sum is 28.

The square root of 42552424 is about 6523.2219033235. The cubic root of 42552424 is about 349.1200316186.

Adding to 42552424 its reverse (42425524), we get a palindrome (84977948).

The spelling of 42552424 in words is "forty-two million, five hundred fifty-two thousand, four hundred twenty-four".