42102042 has 8 divisors (see below), whose sum is σ = 84204096. Its totient is φ = 14034012.

The previous prime is 42102037. The next prime is 42102059. The reversal of 42102042 is 24020124.

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

42102042 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3508498 + ... + 3508509.

It is an arithmetic number, because the mean of its divisors is an integer number (10525512).

Almost surely, 2^42102042 is an apocalyptic number.

42102042 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.

42102042 is a wasteful number, since it uses less digits than its factorization.

42102042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017012.

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

The square root of 42102042 is about 6488.6086335978. The cubic root of 42102042 is about 347.8839453149.

Adding to 42102042 its reverse (24020124), we get a palindrome (66122166).

The spelling of 42102042 in words is "forty-two million, one hundred two thousand, forty-two".