20542030 has 32 divisors (see below), whose sum is σ = 38659680. Its totient is φ = 7850880.

The previous prime is 20542009. The next prime is 20542051. The reversal of 20542030 is 3024502.

It is an interprime number because it is at equal distance from previous prime (20542009) and next prime (20542051).

It is a junction number, because it is equal to n+sod(n) for n = 20541995 and 20542013.

It is a congruent number.

It is an unprimeable number.

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, 21360 + ... + 22300.

It is an arithmetic number, because the mean of its divisors is an integer number (1208115).

Almost surely, 2^20542030 is an apocalyptic number.

20542030 is a deficient number, since it is larger than the sum of its proper divisors (18117650).

20542030 is a wasteful number, since it uses less digits than its factorization.

20542030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20542030 is about 4532.3316295258. The cubic root of 20542030 is about 273.8720965188.

Adding to 20542030 its reverse (3024502), we get a palindrome (23566532).

The spelling of 20542030 in words is "twenty million, five hundred forty-two thousand, thirty".