212040929 has 2 divisors, whose sum is σ = 212040930. Its totient is φ = 212040928.

The previous prime is 212040919. The next prime is 212040973. The reversal of 212040929 is 929040212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180848704 + 31192225 = 13448^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 212040929 - 2¹² = 212036833 is a prime.

It is a super-2 number, since 2×212040929² = 89922711142366082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212040919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106020464 + 106020465.

It is an arithmetic number, because the mean of its divisors is an integer number (106020465).

Almost surely, 2^212040929 is an apocalyptic number.

It is an amenable number.

212040929 is a deficient number, since it is larger than the sum of its proper divisors (1).

212040929 is an equidigital number, since it uses as much as digits as its factorization.

212040929 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 29.

The square root of 212040929 is about 14561.6252183608. The cubic root of 212040929 is about 596.3115657355.

The spelling of 212040929 in words is "two hundred twelve million, forty thousand, nine hundred twenty-nine".