121691746 has 16 divisors (see below), whose sum is σ = 210846240. Its totient is φ = 52060480.

The previous prime is 121691723. The next prime is 121691761. The reversal of 121691746 is 647196121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162316 + ... + 163063.

It is an arithmetic number, because the mean of its divisors is an integer number (13177890).

Almost surely, 2^121691746 is an apocalyptic number.

121691746 is a deficient number, since it is larger than the sum of its proper divisors (89154494).

121691746 is a wasteful number, since it uses less digits than its factorization.

121691746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325409.

The product of its digits is 18144, while the sum is 37.

The square root of 121691746 is about 11031.3981888063. The cubic root of 121691746 is about 495.5494982699.

The spelling of 121691746 in words is "one hundred twenty-one million, six hundred ninety-one thousand, seven hundred forty-six".