121285679 has 6 divisors (see below), whose sum is σ = 123088104. Its totient is φ = 119485940.

The previous prime is 121285673. The next prime is 121285687. The reversal of 121285679 is 976582121.

It is not a de Polignac number, because 121285679 - 2¹² = 121281583 is a prime.

It is a super-3 number, since 3×121285679³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121285673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92144 + ... + 93450.

It is an arithmetic number, because the mean of its divisors is an integer number (20514684).

Almost surely, 2^121285679 is an apocalyptic number.

121285679 is a deficient number, since it is larger than the sum of its proper divisors (1802425).

121285679 is an frugal number, since it uses more digits than its factorization.

121285679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685 (or 1378 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 121285679 is about 11012.9777535415. The cubic root of 121285679 is about 494.9976927417.

The spelling of 121285679 in words is "one hundred twenty-one million, two hundred eighty-five thousand, six hundred seventy-nine".