20540102 has 16 divisors (see below), whose sum is σ = 35380800. Its totient is φ = 8844840.

The previous prime is 20540101. The next prime is 20540129. The reversal of 20540102 is 20104502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540101) 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 7 ways as a sum of consecutive naturals, for example, 24152 + ... + 24987.

It is an arithmetic number, because the mean of its divisors is an integer number (2211300).

Almost surely, 2^20540102 is an apocalyptic number.

20540102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20540102 is a deficient number, since it is larger than the sum of its proper divisors (14840698).

20540102 is a wasteful number, since it uses less digits than its factorization.

20540102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49171.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20540102 is about 4532.1189304783. The cubic root of 20540102 is about 273.8635280388.

Adding to 20540102 its reverse (20104502), we get a palindrome (40644604).

Subtracting from 20540102 its reverse (20104502), we obtain a square (435600 = 660²).

The spelling of 20540102 in words is "twenty million, five hundred forty thousand, one hundred two".