121645962 has 60 divisors (see below), whose sum is σ = 278431890. Its totient is φ = 39692592.

The previous prime is 121645957. The next prime is 121645963. The reversal of 121645962 is 269546121.

121645962 is a `hidden beast` number, since 1 + 2 + 1 + 64 + 596 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 94303521 + 27342441 = 9711^2 + 5229^2 .

It is not an unprimeable number, because it can be changed into a prime (121645963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1115964 + ... + 1116072.

Almost surely, 2^121645962 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121645962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139215945).

121645962 is an abundant number, since it is smaller than the sum of its proper divisors (156785928).

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

121645962 is an equidigital number, since it uses as much as digits as its factorization.

121645962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 197 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 121645962 is about 11029.3228259944. The cubic root of 121645962 is about 495.4873437281.

The spelling of 121645962 in words is "one hundred twenty-one million, six hundred forty-five thousand, nine hundred sixty-two".