121053787 has 4 divisors (see below), whose sum is σ = 128174616. Its totient is φ = 113932960.

The previous prime is 121053683. The next prime is 121053797. The reversal of 121053787 is 787350121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121053787 - 2⁷ = 121053659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121053797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560389 + ... + 3560422.

It is an arithmetic number, because the mean of its divisors is an integer number (32043654).

Almost surely, 2^121053787 is an apocalyptic number.

121053787 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121053787 is a deficient number, since it is larger than the sum of its proper divisors (7120829).

121053787 is an equidigital number, since it uses as much as digits as its factorization.

121053787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7120828.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 121053787 is about 11002.4445919986. Note that the first 3 decimals coincide. The cubic root of 121053787 is about 494.6820214036.

The spelling of 121053787 in words is "one hundred twenty-one million, fifty-three thousand, seven hundred eighty-seven".