102020142 has 32 divisors (see below), whose sum is σ = 233798400. Its totient is φ = 29072448.

The previous prime is 102020119. The next prime is 102020143. The reversal of 102020142 is 241020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14209 + ... + 20147.

It is an arithmetic number, because the mean of its divisors is an integer number (7306200).

Almost surely, 2^102020142 is an apocalyptic number.

102020142 is an abundant number, since it is smaller than the sum of its proper divisors (131778258).

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

102020142 is a wasteful number, since it uses less digits than its factorization.

102020142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 102020142 is about 10100.5020667292. The cubic root of 102020142 is about 467.2636257281.

Adding to 102020142 its reverse (241020201), we get a palindrome (343040343).

The spelling of 102020142 in words is "one hundred two million, twenty thousand, one hundred forty-two".