42342121100 has 18 divisors (see below), whose sum is σ = 91882403004. Its totient is φ = 16936848400.

The previous prime is 42342121097. The next prime is 42342121117. The reversal of 42342121100 is 112124324.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211710506 + ... + 211710705.

Almost surely, 2^42342121100 is an apocalyptic number.

It is an amenable number.

42342121100 is an abundant number, since it is smaller than the sum of its proper divisors (49540281904).

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

42342121100 is a wasteful number, since it uses less digits than its factorization.

42342121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423421225 (or 423421218 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42342121100 its reverse (112124324), we get a palindrome (42454245424).

The spelling of 42342121100 in words is "forty-two billion, three hundred forty-two million, one hundred twenty-one thousand, one hundred".