102420042 has 8 divisors (see below), whose sum is σ = 204840096. Its totient is φ = 34140012.

The previous prime is 102419987. The next prime is 102420061. The reversal of 102420042 is 240024201.

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

102420042 is an admirable 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 in 3 ways as a sum of consecutive naturals, for example, 8534998 + ... + 8535009.

It is an arithmetic number, because the mean of its divisors is an integer number (25605012).

Almost surely, 2^102420042 is an apocalyptic number.

102420042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

102420042 is a wasteful number, since it uses less digits than its factorization.

102420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17070012.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 102420042 is about 10120.2787511017. The cubic root of 102420042 is about 467.8733586040.

Adding to 102420042 its reverse (240024201), we get a palindrome (342444243).

The spelling of 102420042 in words is "one hundred two million, four hundred twenty thousand, forty-two".