102542238 has 12 divisors (see below), whose sum is σ = 222174888. Its totient is φ = 34180740.

The previous prime is 102542201. The next prime is 102542269. The reversal of 102542238 is 832245201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2848378 + ... + 2848413.

It is an arithmetic number, because the mean of its divisors is an integer number (18514574).

Almost surely, 2^102542238 is an apocalyptic number.

102542238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102542238 is an abundant number, since it is smaller than the sum of its proper divisors (119632650).

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

102542238 is a wasteful number, since it uses less digits than its factorization.

102542238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696799 (or 5696796 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 102542238 is about 10126.3141369404. The cubic root of 102542238 is about 468.0593558291.

Adding to 102542238 its reverse (832245201), we get a palindrome (934787439).

The spelling of 102542238 in words is "one hundred two million, five hundred forty-two thousand, two hundred thirty-eight".