42123400120 has 32 divisors (see below), whose sum is σ = 94813138800. Its totient is φ = 16843051008.

The previous prime is 42123400091. The next prime is 42123400141. The reversal of 42123400120 is 2100432124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88254 + ... + 303373.

Almost surely, 2^42123400120 is an apocalyptic number.

42123400120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42123400120 is an abundant number, since it is smaller than the sum of its proper divisors (52689738680).

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

42123400120 is a wasteful number, since it uses less digits than its factorization.

42123400120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394327 (or 394323 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 42123400120 its reverse (2100432124), we get a palindrome (44223832244).

The spelling of 42123400120 in words is "forty-two billion, one hundred twenty-three million, four hundred thousand, one hundred twenty".