121400305045 has 4 divisors (see below), whose sum is σ = 145680366060. Its totient is φ = 97120244032.

The previous prime is 121400305007. The next prime is 121400305049. The reversal of 121400305045 is 540503004121.

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 22138761681 + 99261543364 = 148791^2 + 315058^2 .

It is a cyclic number.

It is not a de Polignac number, because 121400305045 - 2⁹ = 121400304533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121400305049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12140030500 + ... + 12140030509.

It is an arithmetic number, because the mean of its divisors is an integer number (36420091515).

Almost surely, 2^121400305045 is an apocalyptic number.

It is an amenable number.

121400305045 is a deficient number, since it is larger than the sum of its proper divisors (24280061015).

121400305045 is an equidigital number, since it uses as much as digits as its factorization.

121400305045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24280061014.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 121400305045 its reverse (540503004121), we get a palindrome (661903309166).

The spelling of 121400305045 in words is "one hundred twenty-one billion, four hundred million, three hundred five thousand, forty-five".