121436757 has 24 divisors (see below), whose sum is σ = 197119104. Its totient is φ = 71479584.

The previous prime is 121436753. The next prime is 121436759. The reversal of 121436757 is 757634121.

It is a happy number.

It is not a de Polignac number, because 121436757 - 2² = 121436753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121436753) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19873 + ... + 25254.

It is an arithmetic number, because the mean of its divisors is an integer number (8213296).

Almost surely, 2^121436757 is an apocalyptic number.

It is an amenable number.

121436757 is a deficient number, since it is larger than the sum of its proper divisors (75682347).

121436757 is a wasteful number, since it uses less digits than its factorization.

121436757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45169 (or 45166 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 121436757 is about 11019.8347083793. The cubic root of 121436757 is about 495.2031367055.

The spelling of 121436757 in words is "one hundred twenty-one million, four hundred thirty-six thousand, seven hundred fifty-seven".