196762421 has 2 divisors, whose sum is σ = 196762422. Its totient is φ = 196762420.

The previous prime is 196762417. The next prime is 196762427. The reversal of 196762421 is 124267691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164839921 + 31922500 = 12839^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 196762421 - 2² = 196762417 is a prime.

It is a super-3 number, since 3×196762421³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196762427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98381210 + 98381211.

It is an arithmetic number, because the mean of its divisors is an integer number (98381211).

Almost surely, 2^196762421 is an apocalyptic number.

It is an amenable number.

196762421 is a deficient number, since it is larger than the sum of its proper divisors (1).

196762421 is an equidigital number, since it uses as much as digits as its factorization.

196762421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 196762421 is about 14027.2028929505. The cubic root of 196762421 is about 581.6307859667.

The spelling of 196762421 in words is "one hundred ninety-six million, seven hundred sixty-two thousand, four hundred twenty-one".