121383730 has 32 divisors (see below), whose sum is σ = 238629888. Its totient is φ = 44184000.

The previous prime is 121383707. The next prime is 121383733. The reversal of 121383730 is 37383121.

It is not an unprimeable number, because it can be changed into a prime (121383733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2655 + ... + 15805.

It is an arithmetic number, because the mean of its divisors is an integer number (7457184).

Almost surely, 2^121383730 is an apocalyptic number.

121383730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121383730 is a deficient number, since it is larger than the sum of its proper divisors (117246158).

121383730 is a wasteful number, since it uses less digits than its factorization.

121383730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13242.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 121383730 is about 11017.4284658445. The cubic root of 121383730 is about 495.1310471657.

The spelling of 121383730 in words is "one hundred twenty-one million, three hundred eighty-three thousand, seven hundred thirty".