102242387 has 4 divisors (see below), whose sum is σ = 110107200. Its totient is φ = 94377576.

The previous prime is 102242381. The next prime is 102242407. The reversal of 102242387 is 783242201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783242201 = 7 ⋅111891743.

It is a cyclic number.

It is not a de Polignac number, because 102242387 - 2⁶ = 102242323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102242381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3932387 + ... + 3932412.

It is an arithmetic number, because the mean of its divisors is an integer number (27526800).

Almost surely, 2^102242387 is an apocalyptic number.

102242387 is a deficient number, since it is larger than the sum of its proper divisors (7864813).

102242387 is an equidigital number, since it uses as much as digits as its factorization.

102242387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7864812.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 102242387 is about 10111.4977624484. The cubic root of 102242387 is about 467.6026819359.

Adding to 102242387 its reverse (783242201), we get a palindrome (885484588).

The spelling of 102242387 in words is "one hundred two million, two hundred forty-two thousand, three hundred eighty-seven".