211344042 has 32 divisors (see below), whose sum is σ = 520232832. Its totient is φ = 55738944.

The previous prime is 211344041. The next prime is 211344043. The reversal of 211344042 is 240443112.

211344042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211344041) and next prime (211344043).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (211344041) 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, 192993 + ... + 194084.

It is an arithmetic number, because the mean of its divisors is an integer number (16257276).

Almost surely, 2^211344042 is an apocalyptic number.

211344042 is an abundant number, since it is smaller than the sum of its proper divisors (308888790).

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

211344042 is a wasteful number, since it uses less digits than its factorization.

211344042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387102.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 211344042 is about 14537.6766369321. The cubic root of 211344042 is about 595.6575758501.

Adding to 211344042 its reverse (240443112), we get a palindrome (451787154).

The spelling of 211344042 in words is "two hundred eleven million, three hundred forty-four thousand, forty-two".