20342130 has 32 divisors (see below), whose sum is σ = 48955968. Its totient is φ = 5409600.

The previous prime is 20342129. The next prime is 20342131. The reversal of 20342130 is 3124302.

It is an interprime number because it is at equal distance from previous prime (20342129) and next prime (20342131).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20342131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14040 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (1529874).

Almost surely, 2^20342130 is an apocalyptic number.

20342130 is an abundant number, since it is smaller than the sum of its proper divisors (28613838).

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

20342130 is a wasteful number, since it uses less digits than its factorization.

20342130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20342130 is about 4510.2250498174. The cubic root of 20342130 is about 272.9808249088.

Adding to 20342130 its reverse (3124302), we get a palindrome (23466432).

The spelling of 20342130 in words is "twenty million, three hundred forty-two thousand, one hundred thirty".