121256703 has 8 divisors (see below), whose sum is σ = 179639600. Its totient is φ = 80837784.

The previous prime is 121256671. The next prime is 121256719. The reversal of 121256703 is 307652121.

It is a happy number.

It is not a de Polignac number, because 121256703 - 2⁵ = 121256671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4490989 = 121256703 / (1 + 2 + 1 + 2 + 5 + 6 + 7 + 0 + 3).

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121256753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245468 + ... + 2245521.

It is an arithmetic number, because the mean of its divisors is an integer number (22454950).

Almost surely, 2^121256703 is an apocalyptic number.

121256703 is a deficient number, since it is larger than the sum of its proper divisors (58382897).

121256703 is an equidigital number, since it uses as much as digits as its factorization.

121256703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490998 (or 4490992 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 121256703 is about 11011.6621361173. The cubic root of 121256703 is about 494.9582701277.

The spelling of 121256703 in words is "one hundred twenty-one million, two hundred fifty-six thousand, seven hundred three".