121852785 has 16 divisors (see below), whose sum is σ = 201254400. Its totient is φ = 62891520.

The previous prime is 121852771. The next prime is 121852793. The reversal of 121852785 is 587258121.

It is not a de Polignac number, because 121852785 - 2⁶ = 121852721 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130560 + ... + 131489.

It is an arithmetic number, because the mean of its divisors is an integer number (12578400).

Almost surely, 2^121852785 is an apocalyptic number.

121852785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121852785 is a deficient number, since it is larger than the sum of its proper divisors (79401615).

121852785 is a wasteful number, since it uses less digits than its factorization.

121852785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262088.

The product of its digits is 44800, while the sum is 39.

The square root of 121852785 is about 11038.6948956840. The cubic root of 121852785 is about 495.7679946544.

It can be divided in two parts, 1218 and 52785, that multiplied together give a triangular number (64292130 = T₁₁₃₃₉).

The spelling of 121852785 in words is "one hundred twenty-one million, eight hundred fifty-two thousand, seven hundred eighty-five".