20042130 has 32 divisors (see below), whose sum is σ = 48379968. Its totient is φ = 5313600.

The previous prime is 20042117. The next prime is 20042173. The reversal of 20042130 is 3124002.

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 15 ways as a sum of consecutive naturals, for example, 3585 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (1511874).

Almost surely, 2^20042130 is an apocalyptic number.

20042130 is an abundant number, since it is smaller than the sum of its proper divisors (28337838).

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

20042130 is a wasteful number, since it uses less digits than its factorization.

20042130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20042130 is about 4476.8437542537. The cubic root of 20042130 is about 271.6322253418.

Adding to 20042130 its reverse (3124002), we get a palindrome (23166132).

The spelling of 20042130 in words is "twenty million, forty-two thousand, one hundred thirty".