102102142 has 8 divisors (see below), whose sum is σ = 156411936. Its totient is φ = 49964832.

The previous prime is 102102139. The next prime is 102102157. The reversal of 102102142 is 241201201.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543003 + ... + 543190.

It is an arithmetic number, because the mean of its divisors is an integer number (19551492).

Almost surely, 2^102102142 is an apocalyptic number.

102102142 is a deficient number, since it is larger than the sum of its proper divisors (54309794).

102102142 is a wasteful number, since it uses less digits than its factorization.

102102142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086242.

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

The square root of 102102142 is about 10104.5604555567. The cubic root of 102102142 is about 467.3887819165.

Adding to 102102142 its reverse (241201201), we get a palindrome (343303343).

The spelling of 102102142 in words is "one hundred two million, one hundred two thousand, one hundred forty-two".