102213142 has 4 divisors (see below), whose sum is σ = 153319716. Its totient is φ = 51106570.

The previous prime is 102213113. The next prime is 102213151. The reversal of 102213142 is 241312201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25553284 + ... + 25553287.

It is an arithmetic number, because the mean of its divisors is an integer number (38329929).

Almost surely, 2^102213142 is an apocalyptic number.

102213142 is a deficient number, since it is larger than the sum of its proper divisors (51106574).

102213142 is an equidigital number, since it uses as much as digits as its factorization.

102213142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51106573.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102213142 is about 10110.0515330042. The cubic root of 102213142 is about 467.5580939560.

Adding to 102213142 its reverse (241312201), we get a palindrome (343525343).

The spelling of 102213142 in words is "one hundred two million, two hundred thirteen thousand, one hundred forty-two".