214221042 has 72 divisors (see below), whose sum is σ = 546191100. Its totient is φ = 60496128.

The previous prime is 214221019. The next prime is 214221047. The reversal of 214221042 is 240122412.

It can be written as a sum of positive squares in 2 ways, for example, as 210569121 + 3651921 = 14511^2 + 1911^2 .

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 (214221047) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 77134 + ... + 79862.

Almost surely, 2^214221042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214221042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273095550).

214221042 is an abundant number, since it is smaller than the sum of its proper divisors (331970058).

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

214221042 is a wasteful number, since it uses less digits than its factorization.

214221042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 214221042 is about 14636.2919484410. The cubic root of 214221042 is about 598.3482738403.

Adding to 214221042 its reverse (240122412), we get a palindrome (454343454).

The spelling of 214221042 in words is "two hundred fourteen million, two hundred twenty-one thousand, forty-two".