212507450 has 12 divisors (see below), whose sum is σ = 395263950. Its totient is φ = 85002960.

The previous prime is 212507443. The next prime is 212507459. The reversal of 212507450 is 54705212.

It can be written as a sum of positive squares in 3 ways, for example, as 128436889 + 84070561 = 11333^2 + 9169^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212507459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2125025 + ... + 2125124.

Almost surely, 2^212507450 is an apocalyptic number.

212507450 is a deficient number, since it is larger than the sum of its proper divisors (182756500).

212507450 is a wasteful number, since it uses less digits than its factorization.

212507450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250161 (or 4250156 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 212507450 is about 14577.6352677655. The cubic root of 212507450 is about 596.7485695683.

The spelling of 212507450 in words is "two hundred twelve million, five hundred seven thousand, four hundred fifty".