20962129 has 2 divisors, whose sum is σ = 20962130. Its totient is φ = 20962128.

The previous prime is 20962079. The next prime is 20962159. The reversal of 20962129 is 92126902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13950225 + 7011904 = 3735^2 + 2648^2 .

It is a cyclic number.

It is not a de Polignac number, because 20962129 - 2¹⁵ = 20929361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20962129.

It is not a weakly prime, because it can be changed into another prime (20962159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10481064 + 10481065.

It is an arithmetic number, because the mean of its divisors is an integer number (10481065).

Almost surely, 2^20962129 is an apocalyptic number.

It is an amenable number.

20962129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20962129 is an equidigital number, since it uses as much as digits as its factorization.

20962129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 20962129 is about 4578.4417654918. The cubic root of 20962129 is about 275.7264714664.

It can be divided in two parts, 2096 and 2129, that added together give a square (4225 = 65²).

The spelling of 20962129 in words is "twenty million, nine hundred sixty-two thousand, one hundred twenty-nine".