213145242 has 8 divisors (see below), whose sum is σ = 426290496. Its totient is φ = 71048412.

The previous prime is 213145223. The next prime is 213145259. The reversal of 213145242 is 242541312.

213145242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

213145242 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17762098 + ... + 17762109.

It is an arithmetic number, because the mean of its divisors is an integer number (53286312).

Almost surely, 2^213145242 is an apocalyptic number.

213145242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213145242 is a wasteful number, since it uses less digits than its factorization.

213145242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35524212.

The product of its digits is 1920, while the sum is 24.

The square root of 213145242 is about 14599.4945802928. The cubic root of 213145242 is about 597.3449742823.

Adding to 213145242 its reverse (242541312), we get a palindrome (455686554).

The spelling of 213145242 in words is "two hundred thirteen million, one hundred forty-five thousand, two hundred forty-two".