121977692 has 6 divisors (see below), whose sum is σ = 213460968. Its totient is φ = 60988844.

The previous prime is 121977689. The next prime is 121977697. The reversal of 121977692 is 296779121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121977697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15247208 + ... + 15247215.

It is an arithmetic number, because the mean of its divisors is an integer number (35576828).

Almost surely, 2^121977692 is an apocalyptic number.

It is an amenable number.

121977692 is a deficient number, since it is larger than the sum of its proper divisors (91483276).

121977692 is a wasteful number, since it uses less digits than its factorization.

121977692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30494427 (or 30494425 counting only the distinct ones).

The product of its digits is 95256, while the sum is 44.

The square root of 121977692 is about 11044.3511353089. The cubic root of 121977692 is about 495.9373349118.

The spelling of 121977692 in words is "one hundred twenty-one million, nine hundred seventy-seven thousand, six hundred ninety-two".