121402887 has 8 divisors (see below), whose sum is σ = 161923440. Its totient is φ = 80908800.

The previous prime is 121402873. The next prime is 121402937. The reversal of 121402887 is 788204121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121402887 - 2⁶ = 121402823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121402817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10189 + ... + 18617.

It is an arithmetic number, because the mean of its divisors is an integer number (20240430).

Almost surely, 2^121402887 is an apocalyptic number.

121402887 is a deficient number, since it is larger than the sum of its proper divisors (40520553).

121402887 is an equidigital number, since it uses as much as digits as its factorization.

121402887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13233.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 121402887 is about 11018.2978267970. The cubic root of 121402887 is about 495.1570932882.

The spelling of 121402887 in words is "one hundred twenty-one million, four hundred two thousand, eight hundred eighty-seven".