213745042 has 16 divisors (see below), whose sum is σ = 366674112. Its totient is φ = 91541520.

The previous prime is 213745001. The next prime is 213745057. The reversal of 213745042 is 240547312.

It is a self number, because there is not a number n which added to its sum of digits gives 213745042.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19692 + ... + 28552.

It is an arithmetic number, because the mean of its divisors is an integer number (22917132).

Almost surely, 2^213745042 is an apocalyptic number.

213745042 is a deficient number, since it is larger than the sum of its proper divisors (152929070).

213745042 is a wasteful number, since it uses less digits than its factorization.

213745042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10593.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 213745042 is about 14620.0219562079. The cubic root of 213745042 is about 597.9047677792.

The spelling of 213745042 in words is "two hundred thirteen million, seven hundred forty-five thousand, forty-two".