20126140 has 12 divisors (see below), whose sum is σ = 42264936. Its totient is φ = 8050448.

The previous prime is 20126137. The next prime is 20126153. The reversal of 20126140 is 4162102.

It is a super-2 number, since 2×20126140² = 810123022599200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 503134 + ... + 503173.

It is an arithmetic number, because the mean of its divisors is an integer number (3522078).

Almost surely, 2^20126140 is an apocalyptic number.

20126140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20126140 is an abundant number, since it is smaller than the sum of its proper divisors (22138796).

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

20126140 is a wasteful number, since it uses less digits than its factorization.

20126140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006316 (or 1006314 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20126140 is about 4486.2166688648. The cubic root of 20126140 is about 272.0112271894.

Adding to 20126140 its reverse (4162102), we get a palindrome (24288242).

The spelling of 20126140 in words is "twenty million, one hundred twenty-six thousand, one hundred forty".