211002142 has 8 divisors (see below), whose sum is σ = 340849656. Its totient is φ = 97385592.

The previous prime is 211002107. The next prime is 211002149. The reversal of 211002142 is 241200112.

It is a happy number.

211002142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4057708 + ... + 4057759.

It is an arithmetic number, because the mean of its divisors is an integer number (42606207).

Almost surely, 2^211002142 is an apocalyptic number.

211002142 is a deficient number, since it is larger than the sum of its proper divisors (129847514).

211002142 is a wasteful number, since it uses less digits than its factorization.

211002142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8115482.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 211002142 is about 14525.9127768275. The cubic root of 211002142 is about 595.3361958502.

Adding to 211002142 its reverse (241200112), we get a palindrome (452202254).

The spelling of 211002142 in words is "two hundred eleven million, two thousand, one hundred forty-two".