20401127 has 2 divisors, whose sum is σ = 20401128. Its totient is φ = 20401126.

The previous prime is 20401111. The next prime is 20401141. The reversal of 20401127 is 72110402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20401127 - 2⁴ = 20401111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20401427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200563 + 10200564.

It is an arithmetic number, because the mean of its divisors is an integer number (10200564).

Almost surely, 2^20401127 is an apocalyptic number.

20401127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401127 is an equidigital number, since it uses as much as digits as its factorization.

20401127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 20401127 is about 4516.7606755284. The cubic root of 20401127 is about 273.2444732300.

Adding to 20401127 its reverse (72110402), we get a palindrome (92511529).

The spelling of 20401127 in words is "twenty million, four hundred one thousand, one hundred twenty-seven".