212145054 has 32 divisors (see below), whose sum is σ = 482989824. Its totient is φ = 61490880.

The previous prime is 212145047. The next prime is 212145067. The reversal of 212145054 is 450541212.

212145054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68359 + ... + 71394.

It is an arithmetic number, because the mean of its divisors is an integer number (15093432).

Almost surely, 2^212145054 is an apocalyptic number.

212145054 is an abundant number, since it is smaller than the sum of its proper divisors (270844770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212145054 is a wasteful number, since it uses less digits than its factorization.

212145054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139792.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 212145054 is about 14565.2001016121. The cubic root of 212145054 is about 596.4091581851.

Adding to 212145054 its reverse (450541212), we get a palindrome (662686266).

It can be divided in two parts, 2 and 12145054, that added together give a triangular number (12145056 = T₄₉₂₈).

The spelling of 212145054 in words is "two hundred twelve million, one hundred forty-five thousand, fifty-four".