42130520 has 16 divisors (see below), whose sum is σ = 94793760. Its totient is φ = 16852192.

The previous prime is 42130513. The next prime is 42130537. The reversal of 42130520 is 2503124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526592 + ... + 526671.

It is an arithmetic number, because the mean of its divisors is an integer number (5924610).

Almost surely, 2^42130520 is an apocalyptic number.

42130520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42130520 is an abundant number, since it is smaller than the sum of its proper divisors (52663240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42130520 is a wasteful number, since it uses less digits than its factorization.

42130520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053274 (or 1053270 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42130520 is about 6490.8027238547. The cubic root of 42130520 is about 347.9623643626.

Adding to 42130520 its reverse (2503124), we get a palindrome (44633644).

The spelling of 42130520 in words is "forty-two million, one hundred thirty thousand, five hundred twenty".