120721006 has 48 divisors (see below), whose sum is σ = 220631040. Its totient is φ = 49336560.

The previous prime is 120720991. The next prime is 120721019. The reversal of 120721006 is 600127021.

It is a super-2 number, since 2×120721006² = 29147122579304072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239751 + ... + 240253.

It is an arithmetic number, because the mean of its divisors is an integer number (4596480).

Almost surely, 2^120721006 is an apocalyptic number.

120721006 is a deficient number, since it is larger than the sum of its proper divisors (99910034).

120721006 is a wasteful number, since it uses less digits than its factorization.

120721006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 120721006 is about 10987.3111360332. The cubic root of 120721006 is about 494.2283061253.

Adding to 120721006 its reverse (600127021), we get a palindrome (720848027).

The spelling of 120721006 in words is "one hundred twenty million, seven hundred twenty-one thousand, six".