102128038 has 4 divisors (see below), whose sum is σ = 153192060. Its totient is φ = 51064018.

The previous prime is 102128023. The next prime is 102128051. The reversal of 102128038 is 830821201.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×102128038² = 20860272291458888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25532008 + ... + 25532011.

It is an arithmetic number, because the mean of its divisors is an integer number (38298015).

Almost surely, 2^102128038 is an apocalyptic number.

102128038 is a deficient number, since it is larger than the sum of its proper divisors (51064022).

102128038 is an equidigital number, since it uses as much as digits as its factorization.

102128038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51064021.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 102128038 is about 10105.8417759235. The cubic root of 102128038 is about 467.4282929282.

Adding to 102128038 its reverse (830821201), we get a palindrome (932949239).

The spelling of 102128038 in words is "one hundred two million, one hundred twenty-eight thousand, thirty-eight".