102042030 has 64 divisors (see below), whose sum is σ = 261854208. Its totient is φ = 25386240.

The previous prime is 102042019. The next prime is 102042037. The reversal of 102042030 is 30240201.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102041997 and 102042015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102042037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26487 + ... + 30093.

It is an arithmetic number, because the mean of its divisors is an integer number (4091472).

Almost surely, 2^102042030 is an apocalyptic number.

102042030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102042030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130927104).

102042030 is an abundant number, since it is smaller than the sum of its proper divisors (159812178).

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

102042030 is a wasteful number, since it uses less digits than its factorization.

102042030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 102042030 is about 10101.5855191153. The cubic root of 102042030 is about 467.2970398321.

Adding to 102042030 its reverse (30240201), we get a palindrome (132282231).

The spelling of 102042030 in words is "one hundred two million, forty-two thousand, thirty".