102042242 has 8 divisors (see below), whose sum is σ = 158341500. Its totient is φ = 49261744.

The previous prime is 102042223. The next prime is 102042251. The reversal of 102042242 is 242240201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 101989801 + 52441 = 10099^2 + 229^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 102042242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879617 + ... + 879732.

Almost surely, 2^102042242 is an apocalyptic number.

102042242 is a deficient number, since it is larger than the sum of its proper divisors (56299258).

102042242 is a wasteful number, since it uses less digits than its factorization.

102042242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759380.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 102042242 is about 10101.5960125121. The cubic root of 102042242 is about 467.2973634468.

Adding to 102042242 its reverse (242240201), we get a palindrome (344282443).

The spelling of 102042242 in words is "one hundred two million, forty-two thousand, two hundred forty-two".