210002142 has 48 divisors (see below), whose sum is σ = 491240592. Its totient is φ = 59673600.

The previous prime is 210002141. The next prime is 210002147. The reversal of 210002142 is 241200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54892 + ... + 58592.

It is an arithmetic number, because the mean of its divisors is an integer number (10234179).

Almost surely, 2^210002142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210002142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245620296).

210002142 is an abundant number, since it is smaller than the sum of its proper divisors (281238450).

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

210002142 is a wasteful number, since it uses less digits than its factorization.

210002142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913 (or 3906 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 210002142 is about 14491.4506520224. The cubic root of 210002142 is about 594.3942162029.

Adding to 210002142 its reverse (241200012), we get a palindrome (451202154).

The spelling of 210002142 in words is "two hundred ten million, two thousand, one hundred forty-two".