212351542 has 24 divisors (see below), whose sum is σ = 350099496. Its totient is φ = 96535296.

The previous prime is 212351533. The next prime is 212351563. The reversal of 212351542 is 245153212.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 17958 + ... + 27334.

It is an arithmetic number, because the mean of its divisors is an integer number (14587479).

Almost surely, 2^212351542 is an apocalyptic number.

212351542 is a deficient number, since it is larger than the sum of its proper divisors (137747954).

212351542 is a wasteful number, since it uses less digits than its factorization.

212351542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9472 (or 9459 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 212351542 is about 14572.2867800493. The cubic root of 212351542 is about 596.6025972146.

The spelling of 212351542 in words is "two hundred twelve million, three hundred fifty-one thousand, five hundred forty-two".