212420493 has 24 divisors (see below), whose sum is σ = 312748800. Its totient is φ = 138906144.

The previous prime is 212420477. The next prime is 212420501. The reversal of 212420493 is 394024212.

212420493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212420493 - 2⁴ = 212420477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212420413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117843 + ... + 119631.

It is an arithmetic number, because the mean of its divisors is an integer number (13031200).

Almost surely, 2^212420493 is an apocalyptic number.

It is an amenable number.

212420493 is a deficient number, since it is larger than the sum of its proper divisors (100328307).

212420493 is a wasteful number, since it uses less digits than its factorization.

212420493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2038 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 212420493 is about 14574.6524143802. The cubic root of 212420493 is about 596.6671629401.

The spelling of 212420493 in words is "two hundred twelve million, four hundred twenty thousand, four hundred ninety-three".