121402115 has 32 divisors (see below), whose sum is σ = 158906880. Its totient is φ = 88736256.

The previous prime is 121402111. The next prime is 121402123. The reversal of 121402115 is 511204121.

It is a cyclic number.

It is not a de Polignac number, because 121402115 - 2² = 121402111 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 121402093 and 121402102.

It is not an unprimeable number, because it can be changed into a prime (121402111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461474 + ... + 461736.

It is an arithmetic number, because the mean of its divisors is an integer number (4965840).

Almost surely, 2^121402115 is an apocalyptic number.

121402115 is a deficient number, since it is larger than the sum of its proper divisors (37504765).

121402115 is a wasteful number, since it uses less digits than its factorization.

121402115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 121402115 is about 11018.2627941069. The cubic root of 121402115 is about 495.1560437193.

Adding to 121402115 its reverse (511204121), we get a palindrome (632606236).

The spelling of 121402115 in words is "one hundred twenty-one million, four hundred two thousand, one hundred fifteen".