213442042 has 32 divisors (see below), whose sum is σ = 356843520. Its totient is φ = 94938480.

The previous prime is 213442007. The next prime is 213442043. The reversal of 213442042 is 240244312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (213442043) 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, 220243 + ... + 221209.

It is an arithmetic number, because the mean of its divisors is an integer number (11151360).

Almost surely, 2^213442042 is an apocalyptic number.

213442042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213442042 is a deficient number, since it is larger than the sum of its proper divisors (143401478).

213442042 is a wasteful number, since it uses less digits than its factorization.

213442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 213442042 is about 14609.6557796548. The cubic root of 213442042 is about 597.6221088762.

Adding to 213442042 its reverse (240244312), we get a palindrome (453686354).

The spelling of 213442042 in words is "two hundred thirteen million, four hundred forty-two thousand, forty-two".