102043242 has 48 divisors (see below), whose sum is σ = 254022912. Its totient is φ = 29000160.

The previous prime is 102043241. The next prime is 102043261. The reversal of 102043242 is 242340201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102043241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22767 + ... + 26877.

It is an arithmetic number, because the mean of its divisors is an integer number (5292144).

Almost surely, 2^102043242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102043242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127011456).

102043242 is an abundant number, since it is smaller than the sum of its proper divisors (151979670).

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

102043242 is a wasteful number, since it uses less digits than its factorization.

102043242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323 (or 4320 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 102043242 is about 10101.6455095197. The cubic root of 102043242 is about 467.2988899252.

Adding to 102043242 its reverse (242340201), we get a palindrome (344383443).

The spelling of 102043242 in words is "one hundred two million, forty-three thousand, two hundred forty-two".