211233042 has 32 divisors (see below), whose sum is σ = 485596800. Its totient is φ = 67982544.

The previous prime is 211233017. The next prime is 211233049. The reversal of 211233042 is 240332112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (211233049) 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, 65878 + ... + 69009.

It is an arithmetic number, because the mean of its divisors is an integer number (15174900).

Almost surely, 2^211233042 is an apocalyptic number.

211233042 is an abundant number, since it is smaller than the sum of its proper divisors (274363758).

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

211233042 is a wasteful number, since it uses less digits than its factorization.

211233042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134927 (or 134921 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 211233042 is about 14533.8584691059. The cubic root of 211233042 is about 595.5532758204.

Adding to 211233042 its reverse (240332112), we get a palindrome (451565154).

It can be divided in two parts, 2112330 and 42, that multiplied together give a triangular number (88717860 = T₁₃₃₂₀).

The spelling of 211233042 in words is "two hundred eleven million, two hundred thirty-three thousand, forty-two".