102142222 has 32 divisors (see below), whose sum is σ = 199668672. Its totient is φ = 38029824.

The previous prime is 102142217. The next prime is 102142247. The reversal of 102142222 is 222241201.

It is a junction number, because it is equal to n+sod(n) for n = 102142196 and 102142205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13413 + ... + 19600.

It is an arithmetic number, because the mean of its divisors is an integer number (6239646).

Almost surely, 2^102142222 is an apocalyptic number.

102142222 is a deficient number, since it is larger than the sum of its proper divisors (97526450).

102142222 is a wasteful number, since it uses less digits than its factorization.

102142222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33052.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 102142222 is about 10106.5435238760. The cubic root of 102142222 is about 467.4499314391.

Adding to 102142222 its reverse (222241201), we get a palindrome (324383423).

The spelling of 102142222 in words is "one hundred two million, one hundred forty-two thousand, two hundred twenty-two".