210122142 has 16 divisors (see below), whose sum is σ = 444964752. Its totient is φ = 65920640.

The previous prime is 210122141. The next prime is 210122153. The reversal of 210122142 is 241221012.

210122142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210122141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029909 + ... + 1030112.

It is an arithmetic number, because the mean of its divisors is an integer number (27810297).

Almost surely, 2^210122142 is an apocalyptic number.

210122142 is an abundant number, since it is smaller than the sum of its proper divisors (234842610).

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

210122142 is a wasteful number, since it uses less digits than its factorization.

210122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060043.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 210122142 is about 14495.5904329558. The cubic root of 210122142 is about 594.5074114360.

Adding to 210122142 its reverse (241221012), we get a palindrome (451343154).

The spelling of 210122142 in words is "two hundred ten million, one hundred twenty-two thousand, one hundred forty-two".