102438190 has 8 divisors (see below), whose sum is σ = 184388760. Its totient is φ = 40975272.

The previous prime is 102438181. The next prime is 102438191. The reversal of 102438190 is 91834201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×102438190² = 20987165540952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102438191) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5121900 + ... + 5121919.

It is an arithmetic number, because the mean of its divisors is an integer number (23048595).

Almost surely, 2^102438190 is an apocalyptic number.

102438190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102438190 is a deficient number, since it is larger than the sum of its proper divisors (81950570).

102438190 is a wasteful number, since it uses less digits than its factorization.

102438190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10243826.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 102438190 is about 10121.1753270062. The cubic root of 102438190 is about 467.9009914256.

The spelling of 102438190 in words is "one hundred two million, four hundred thirty-eight thousand, one hundred ninety".