121256534 has 8 divisors (see below), whose sum is σ = 207868368. Its totient is φ = 51967080.

The previous prime is 121256521. The next prime is 121256543. The reversal of 121256534 is 435652121.

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

It is a junction number, because it is equal to n+sod(n) for n = 121256497 and 121256506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4330577 + ... + 4330604.

It is an arithmetic number, because the mean of its divisors is an integer number (25983546).

Almost surely, 2^121256534 is an apocalyptic number.

121256534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121256534 is a deficient number, since it is larger than the sum of its proper divisors (86611834).

121256534 is an equidigital number, since it uses as much as digits as its factorization.

121256534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8661190.

The product of its digits is 7200, while the sum is 29.

The square root of 121256534 is about 11011.6544624321. The cubic root of 121256534 is about 494.9580401803.

The spelling of 121256534 in words is "one hundred twenty-one million, two hundred fifty-six thousand, five hundred thirty-four".