210142693 has 2 divisors, whose sum is σ = 210142694. Its totient is φ = 210142692.

The previous prime is 210142663. The next prime is 210142703. The reversal of 210142693 is 396241012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209178369 + 964324 = 14463^2 + 982^2 .

It is a cyclic number.

It is not a de Polignac number, because 210142693 - 2⁹ = 210142181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210142633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105071346 + 105071347.

It is an arithmetic number, because the mean of its divisors is an integer number (105071347).

Almost surely, 2^210142693 is an apocalyptic number.

It is an amenable number.

210142693 is a deficient number, since it is larger than the sum of its proper divisors (1).

210142693 is an equidigital number, since it uses as much as digits as its factorization.

210142693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 210142693 is about 14496.2992863696. The cubic root of 210142693 is about 594.5267927403.

The spelling of 210142693 in words is "two hundred ten million, one hundred forty-two thousand, six hundred ninety-three".