121337745 has 16 divisors (see below), whose sum is σ = 194278272. Its totient is φ = 64667520.

The previous prime is 121337731. The next prime is 121337761. The reversal of 121337745 is 547733121.

It is not a de Polignac number, because 121337745 - 2⁴ = 121337729 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 35460 + ... + 38730.

It is an arithmetic number, because the mean of its divisors is an integer number (12142392).

Almost surely, 2^121337745 is an apocalyptic number.

121337745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121337745 is a deficient number, since it is larger than the sum of its proper divisors (72940527).

121337745 is a wasteful number, since it uses less digits than its factorization.

121337745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752.

The product of its digits is 17640, while the sum is 33.

The square root of 121337745 is about 11015.3413474118. The cubic root of 121337745 is about 495.0685141364.

The spelling of 121337745 in words is "one hundred twenty-one million, three hundred thirty-seven thousand, seven hundred forty-five".