121493648 has 10 divisors (see below), whose sum is σ = 235393974. Its totient is φ = 60746816.

The previous prime is 121493641. The next prime is 121493651. The reversal of 121493648 is 846394121.

It can be written as a sum of positive squares in only one way, i.e., 110418064 + 11075584 = 10508^2 + 3328^2 .

It is not an unprimeable number, because it can be changed into a prime (121493641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3796661 + ... + 3796692.

Almost surely, 2^121493648 is an apocalyptic number.

It is an amenable number.

121493648 is a deficient number, since it is larger than the sum of its proper divisors (113900326).

121493648 is an equidigital number, since it uses as much as digits as its factorization.

121493648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7593361 (or 7593355 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 121493648 is about 11022.4157061871. The cubic root of 121493648 is about 495.2804559731.

The spelling of 121493648 in words is "one hundred twenty-one million, four hundred ninety-three thousand, six hundred forty-eight".