121887670 has 32 divisors (see below), whose sum is σ = 225783936. Its totient is φ = 47347200.

The previous prime is 121887631. The next prime is 121887677. The reversal of 121887670 is 76788121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121887677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110562 + ... + 111658.

It is an arithmetic number, because the mean of its divisors is an integer number (7055748).

Almost surely, 2^121887670 is an apocalyptic number.

121887670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121887670 is a deficient number, since it is larger than the sum of its proper divisors (103896266).

121887670 is a wasteful number, since it uses less digits than its factorization.

121887670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416.

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 121887670 is about 11040.2749059976. The cubic root of 121887670 is about 495.8153009629.

It can be divided in two parts, 1218 and 87670, that added together give a palindrome (88888).

The spelling of 121887670 in words is "one hundred twenty-one million, eight hundred eighty-seven thousand, six hundred seventy".