102442930 has 16 divisors (see below), whose sum is σ = 185621184. Its totient is φ = 40705200.

The previous prime is 102442919. The next prime is 102442937. The reversal of 102442930 is 39244201.

It is a junction number, because it is equal to n+sod(n) for n = 102442895 and 102442904.

It is not an unprimeable number, because it can be changed into a prime (102442937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32412 + ... + 35431.

It is an arithmetic number, because the mean of its divisors is an integer number (11601324).

Almost surely, 2^102442930 is an apocalyptic number.

102442930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102442930 is a deficient number, since it is larger than the sum of its proper divisors (83178254).

102442930 is a wasteful number, since it uses less digits than its factorization.

102442930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68001.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 102442930 is about 10121.4094868254. The cubic root of 102442930 is about 467.9082081888.

The spelling of 102442930 in words is "one hundred two million, four hundred forty-two thousand, nine hundred thirty".