61030120 has 32 divisors (see below), whose sum is σ = 137547720. Its totient is φ = 24371200.

The previous prime is 61030091. The next prime is 61030121. The reversal of 61030120 is 2103016.

It can be written as a sum of positive squares in 4 ways, for example, as 59876644 + 1153476 = 7738^2 + 1074^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61030120.

It is not an unprimeable number, because it can be changed into a prime (61030121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37320 + ... + 38920.

Almost surely, 2^61030120 is an apocalyptic number.

It is an amenable number.

61030120 is an abundant number, since it is smaller than the sum of its proper divisors (76517600).

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

61030120 is a wasteful number, since it uses less digits than its factorization.

61030120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 61030120 is about 7812.1776733508. The cubic root of 61030120 is about 393.7144985209.

Adding to 61030120 its reverse (2103016), we get a palindrome (63133136).

The spelling of 61030120 in words is "sixty-one million, thirty thousand, one hundred twenty".