42523130 has 32 divisors (see below), whose sum is σ = 84357504. Its totient is φ = 15333696.

The previous prime is 42523123. The next prime is 42523139. The reversal of 42523130 is 3132524.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42523139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1787 + ... + 9393.

It is an arithmetic number, because the mean of its divisors is an integer number (2636172).

Almost surely, 2^42523130 is an apocalyptic number.

42523130 is a deficient number, since it is larger than the sum of its proper divisors (41834374).

42523130 is a wasteful number, since it uses less digits than its factorization.

42523130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 42523130 is about 6520.9761539205. The cubic root of 42523130 is about 349.0398993253.

Adding to 42523130 its reverse (3132524), we get a palindrome (45655654).

The spelling of 42523130 in words is "forty-two million, five hundred twenty-three thousand, one hundred thirty".