20602423 has 2 divisors, whose sum is σ = 20602424. Its totient is φ = 20602422.

The previous prime is 20602409. The next prime is 20602447. The reversal of 20602423 is 32420602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20602423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20602423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20602493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10301211 + 10301212.

It is an arithmetic number, because the mean of its divisors is an integer number (10301212).

Almost surely, 2^20602423 is an apocalyptic number.

20602423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20602423 is an equidigital number, since it uses as much as digits as its factorization.

20602423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20602423 is about 4538.9892046578. The cubic root of 20602423 is about 274.1402260552.

It can be divided in two parts, 20602 and 423, that added together give a square (21025 = 145²).

The spelling of 20602423 in words is "twenty million, six hundred two thousand, four hundred twenty-three".