120990834 has 40 divisors (see below), whose sum is σ = 272141100. Its totient is φ = 40176864.

The previous prime is 120990781. The next prime is 120990839. The reversal of 120990834 is 438099021.

It can be written as a sum of positive squares in 2 ways, for example, as 90155025 + 30835809 = 9495^2 + 5553^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120990839) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 46192 + ... + 48740.

Almost surely, 2^120990834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120990834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136070550).

120990834 is an abundant number, since it is smaller than the sum of its proper divisors (151150266).

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

120990834 is a wasteful number, since it uses less digits than its factorization.

120990834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856 (or 2847 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 120990834 is about 10999.5833557458. The cubic root of 120990834 is about 494.5962547981.

The spelling of 120990834 in words is "one hundred twenty million, nine hundred ninety thousand, eight hundred thirty-four".