120438105856 has 18 divisors (see below), whose sum is σ = 240405750872. Its totient is φ = 60219052800.

The previous prime is 120438105839. The next prime is 120438105883. The reversal of 120438105856 is 658501834021.

It is a super-2 number, since 2×120438105856² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235230420 + ... + 235230931.

Almost surely, 2^120438105856 is an apocalyptic number.

120438105856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

120438105856 is a deficient number, since it is larger than the sum of its proper divisors (119967645016).

120438105856 is an frugal number, since it uses more digits than its factorization.

120438105856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470461367 (or 470461353 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

Adding to 120438105856 its reverse (658501834021), we get a palindrome (778939939877).

The spelling of 120438105856 in words is "one hundred twenty billion, four hundred thirty-eight million, one hundred five thousand, eight hundred fifty-six".