42393992550 has 96 divisors (see below), whose sum is σ = 129399551232. Its totient is φ = 8944663680.

The previous prime is 42393992549. The next prime is 42393992561. The reversal of 42393992550 is 5529939324.

It is a junction number, because it is equal to n+sod(n) for n = 42393992493 and 42393992502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1539244 + ... + 1566543.

It is an arithmetic number, because the mean of its divisors is an integer number (1347911992).

Almost surely, 2^42393992550 is an apocalyptic number.

42393992550 is an abundant number, since it is smaller than the sum of its proper divisors (87005558682).

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

42393992550 is a wasteful number, since it uses less digits than its factorization.

42393992550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105822 (or 3105817 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 51.

The spelling of 42393992550 in words is "forty-two billion, three hundred ninety-three million, nine hundred ninety-two thousand, five hundred fifty".