42428948139666 has 48 divisors (see below), whose sum is σ = 100380418669440. Its totient is φ = 12845229579360.

The previous prime is 42428948139661. The next prime is 42428948139689. The reversal of 42428948139666 is 66693184982424.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42428948139594 and 42428948139603.

It is not an unprimeable number, because it can be changed into a prime (42428948139661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100016410 + ... + 100439733.

It is an arithmetic number, because the mean of its divisors is an integer number (2091258722280).

Almost surely, 2^{42428948139666} is an apocalyptic number.

42428948139666 is an abundant number, since it is smaller than the sum of its proper divisors (57951470529774).

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

42428948139666 is a wasteful number, since it uses less digits than its factorization.

42428948139666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200457231 (or 200457228 counting only the distinct ones).

The product of its digits is 859963392, while the sum is 72.

The spelling of 42428948139666 in words is "forty-two trillion, four hundred twenty-eight billion, nine hundred forty-eight million, one hundred thirty-nine thousand, six hundred sixty-six".