20914129 has 2 divisors, whose sum is σ = 20914130. Its totient is φ = 20914128.

The previous prime is 20914123. The next prime is 20914147. The reversal of 20914129 is 92141902.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14837904 + 6076225 = 3852^2 + 2465^2 .

It is a cyclic number.

It is not a de Polignac number, because 20914129 - 2³ = 20914121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20914097 and 20914106.

It is not a weakly prime, because it can be changed into another prime (20914121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457064 + 10457065.

It is an arithmetic number, because the mean of its divisors is an integer number (10457065).

Almost surely, 2^20914129 is an apocalyptic number.

It is an amenable number.

20914129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20914129 is an equidigital number, since it uses as much as digits as its factorization.

20914129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 20914129 is about 4573.1968031127. The cubic root of 20914129 is about 275.5158537785.

The spelling of 20914129 in words is "twenty million, nine hundred fourteen thousand, one hundred twenty-nine".