42920954556 has 12 divisors (see below), whose sum is σ = 100148893992. Its totient is φ = 14306984848.

The previous prime is 42920954539. The next prime is 42920954581. The reversal of 42920954556 is 65545902924.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42920954499 and 42920954508.

It is a congruent number.

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, 1788373095 + ... + 1788373118.

It is an arithmetic number, because the mean of its divisors is an integer number (8345741166).

Almost surely, 2^42920954556 is an apocalyptic number.

It is an amenable number.

42920954556 is an abundant number, since it is smaller than the sum of its proper divisors (57227939436).

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

42920954556 is a wasteful number, since it uses less digits than its factorization.

42920954556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576746220 (or 3576746218 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 42920954556 in words is "forty-two billion, nine hundred twenty million, nine hundred fifty-four thousand, five hundred fifty-six".