116721045 has 48 divisors (see below), whose sum is σ = 238697472. Its totient is φ = 51632640.

The previous prime is 116721043. The next prime is 116721079. The reversal of 116721045 is 540127611.

It is a happy number.

It is not a de Polignac number, because 116721045 - 2¹ = 116721043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116721043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3789 + ... + 15741.

It is an arithmetic number, because the mean of its divisors is an integer number (4972864).

Almost surely, 2^116721045 is an apocalyptic number.

116721045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116721045 is an abundant number, since it is smaller than the sum of its proper divisors (121976427).

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

116721045 is a wasteful number, since it uses less digits than its factorization.

116721045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12002 (or 11999 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 116721045 is about 10803.7514317944. The cubic root of 116721045 is about 488.7083083551.

Adding to 116721045 its reverse (540127611), we get a palindrome (656848656).

The spelling of 116721045 in words is "one hundred sixteen million, seven hundred twenty-one thousand, forty-five".