121087445 has 4 divisors (see below), whose sum is σ = 145304940. Its totient is φ = 96869952.

The previous prime is 121087409. The next prime is 121087451. The reversal of 121087445 is 544780121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27520516 + 93566929 = 5246^2 + 9673^2 .

It is a cyclic number.

It is not a de Polignac number, because 121087445 - 2⁶ = 121087381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12108740 + ... + 12108749.

It is an arithmetic number, because the mean of its divisors is an integer number (36326235).

Almost surely, 2^121087445 is an apocalyptic number.

It is an amenable number.

121087445 is a deficient number, since it is larger than the sum of its proper divisors (24217495).

121087445 is an equidigital number, since it uses as much as digits as its factorization.

121087445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24217494.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 121087445 is about 11003.9740548585. The cubic root of 121087445 is about 494.7278645641.

The spelling of 121087445 in words is "one hundred twenty-one million, eighty-seven thousand, four hundred forty-five".