120040045100 has 72 divisors (see below), whose sum is σ = 269889913440. Its totient is φ = 46287915520.

The previous prime is 120040045079. The next prime is 120040045121. The reversal of 120040045100 is 1540040021.

It is an interprime number because it is at equal distance from previous prime (120040045079) and next prime (120040045121).

It is a super-2 number, since 2×120040045100² (a number of 23 digits) contains 22 as substring.

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, 1844312 + ... + 1908288.

It is an arithmetic number, because the mean of its divisors is an integer number (3748471020).

Almost surely, 2^120040045100 is an apocalyptic number.

120040045100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120040045100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134944956720).

120040045100 is an abundant number, since it is smaller than the sum of its proper divisors (149849868340).

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

120040045100 is a wasteful number, since it uses less digits than its factorization.

120040045100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64667 (or 64660 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 120040045100 its reverse (1540040021), we get a palindrome (121580085121).

The spelling of 120040045100 in words is "one hundred twenty billion, forty million, forty-five thousand, one hundred".