212500154 has 8 divisors (see below), whose sum is σ = 320511828. Its totient is φ = 105662880.

The previous prime is 212500147. The next prime is 212500159. The reversal of 212500154 is 451005212.

212500154 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 163149529 + 49350625 = 12773^2 + 7025^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212500159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293147 + ... + 293870.

Almost surely, 2^212500154 is an apocalyptic number.

212500154 is a deficient number, since it is larger than the sum of its proper divisors (108011674).

212500154 is a wasteful number, since it uses less digits than its factorization.

212500154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587200.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 212500154 is about 14577.3850192687. The cubic root of 212500154 is about 596.7417401177.

Adding to 212500154 its reverse (451005212), we get a palindrome (663505366).

The spelling of 212500154 in words is "two hundred twelve million, five hundred thousand, one hundred fifty-four".