42530024 has 8 divisors (see below), whose sum is σ = 79743810. Its totient is φ = 21265008.

The previous prime is 42530023. The next prime is 42530027. The reversal of 42530024 is 42003524.

It can be written as a sum of positive squares in only one way, i.e., 41860900 + 669124 = 6470^2 + 818^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 42529978 and 42530005.

It is not an unprimeable number, because it can be changed into a prime (42530021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2658119 + ... + 2658134.

Almost surely, 2^42530024 is an apocalyptic number.

It is an amenable number.

42530024 is a deficient number, since it is larger than the sum of its proper divisors (37213786).

42530024 is a wasteful number, since it uses less digits than its factorization.

42530024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316259 (or 5316255 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42530024 is about 6521.5047343385. The cubic root of 42530024 is about 349.0587608330.

Adding to 42530024 its reverse (42003524), we get a palindrome (84533548).

The spelling of 42530024 in words is "forty-two million, five hundred thirty thousand, twenty-four".