213124490 has 8 divisors (see below), whose sum is σ = 383624100. Its totient is φ = 85249792.

The previous prime is 213124487. The next prime is 213124493. The reversal of 213124490 is 94421312.

It is an interprime number because it is at equal distance from previous prime (213124487) and next prime (213124493).

It can be written as a sum of positive squares in 2 ways, for example, as 209931121 + 3193369 = 14489^2 + 1787^2 .

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 (213124493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10656215 + ... + 10656234.

Almost surely, 2^213124490 is an apocalyptic number.

213124490 is a deficient number, since it is larger than the sum of its proper divisors (170499610).

213124490 is a wasteful number, since it uses less digits than its factorization.

213124490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21312456.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 213124490 is about 14598.7838534585. The cubic root of 213124490 is about 597.3255876501.

The spelling of 213124490 in words is "two hundred thirteen million, one hundred twenty-four thousand, four hundred ninety".