61010120 has 64 divisors (see below), whose sum is σ = 142560000. Its totient is φ = 23482368.

The previous prime is 61010119. The next prime is 61010129. The reversal of 61010120 is 2101016.

It is not an unprimeable number, because it can be changed into a prime (61010129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135656 + ... + 136104.

It is an arithmetic number, because the mean of its divisors is an integer number (2227500).

Almost surely, 2^61010120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61010120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71280000).

61010120 is an abundant number, since it is smaller than the sum of its proper divisors (81549880).

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

61010120 is a wasteful number, since it uses less digits than its factorization.

61010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 61010120 is about 7810.8975156508. The cubic root of 61010120 is about 393.6714861510.

Adding to 61010120 its reverse (2101016), we get a palindrome (63111136).

The spelling of 61010120 in words is "sixty-one million, ten thousand, one hundred twenty".