20040127 has 8 divisors (see below), whose sum is σ = 21297600. Its totient is φ = 18856672.

The previous prime is 20040071. The next prime is 20040133. The reversal of 20040127 is 72104002.

It is not a de Polignac number, because 20040127 - 2¹⁵ = 20007359 is a prime.

It is a super-2 number, since 2×20040127² = 803213380352258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20040127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2874 + ... + 6952.

It is an arithmetic number, because the mean of its divisors is an integer number (2662200).

Almost surely, 2^20040127 is an apocalyptic number.

20040127 is a deficient number, since it is larger than the sum of its proper divisors (1257473).

20040127 is an frugal number, since it uses more digits than its factorization.

20040127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4130 (or 4096 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20040127 is about 4476.6200419513. The cubic root of 20040127 is about 271.6231761127.

Adding to 20040127 its reverse (72104002), we get a palindrome (92144129).

The spelling of 20040127 in words is "twenty million, forty thousand, one hundred twenty-seven".