212946045 has 64 divisors (see below), whose sum is σ = 379330560. Its totient is φ = 101359872.

The previous prime is 212946017. The next prime is 212946047. The reversal of 212946045 is 540649212.

It is not a de Polignac number, because 212946045 - 2⁶ = 212945981 is a prime.

It is a super-2 number, since 2×212946045² = 90692036162284050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212945997 and 212946015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212946047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 954804 + ... + 955026.

It is an arithmetic number, because the mean of its divisors is an integer number (5927040).

Almost surely, 2^212946045 is an apocalyptic number.

It is an amenable number.

212946045 is a deficient number, since it is larger than the sum of its proper divisors (166384515).

212946045 is a wasteful number, since it uses less digits than its factorization.

212946045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 212946045 is about 14592.6709344109. The cubic root of 212946045 is about 597.1588313929.

The spelling of 212946045 in words is "two hundred twelve million, nine hundred forty-six thousand, forty-five".