213402145 has 16 divisors (see below), whose sum is σ = 280444032. Its totient is φ = 154600960.

The previous prime is 213402143. The next prime is 213402149. The reversal of 213402145 is 541204312.

It is not a de Polignac number, because 213402145 - 2¹ = 213402143 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (213402143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7089 + ... + 21841.

It is an arithmetic number, because the mean of its divisors is an integer number (17527752).

Almost surely, 2^213402145 is an apocalyptic number.

It is an amenable number.

213402145 is a deficient number, since it is larger than the sum of its proper divisors (67041887).

213402145 is a wasteful number, since it uses less digits than its factorization.

213402145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15032.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 213402145 is about 14608.2902832604. The cubic root of 213402145 is about 597.5848703284.

Adding to 213402145 its reverse (541204312), we get a palindrome (754606457).

The spelling of 213402145 in words is "two hundred thirteen million, four hundred two thousand, one hundred forty-five".