42890102939 has 4 divisors (see below), whose sum is σ = 42910403256. Its totient is φ = 42869802624.

The previous prime is 42890102897. The next prime is 42890102951. The reversal of 42890102939 is 93920109824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42890102939 - 2⁸ = 42890102683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42890102893 and 42890102902.

It is not an unprimeable number, because it can be changed into a prime (42890102999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10146989 + ... + 10151214.

It is an arithmetic number, because the mean of its divisors is an integer number (10727600814).

Almost surely, 2^42890102939 is an apocalyptic number.

42890102939 is a deficient number, since it is larger than the sum of its proper divisors (20300317).

42890102939 is a wasteful number, since it uses less digits than its factorization.

42890102939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20300316.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 42890102939 in words is "forty-two billion, eight hundred ninety million, one hundred two thousand, nine hundred thirty-nine".