121942269 has 12 divisors (see below), whose sum is σ = 180899836. Its totient is φ = 79097472.

The previous prime is 121942259. The next prime is 121942283. The reversal of 121942269 is 962249121.

It can be written as a sum of positive squares in 2 ways, for example, as 103124025 + 18818244 = 10155^2 + 4338^2 .

It is not a de Polignac number, because 121942269 - 2⁴ = 121942253 is a prime.

It is a super-2 number, since 2×121942269² = 29739833937736722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121942259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182764 + ... + 183429.

Almost surely, 2^121942269 is an apocalyptic number.

It is an amenable number.

121942269 is a deficient number, since it is larger than the sum of its proper divisors (58957567).

121942269 is a wasteful number, since it uses less digits than its factorization.

121942269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366236 (or 366233 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 121942269 is about 11042.7473483730. The cubic root of 121942269 is about 495.8893226106.

The spelling of 121942269 in words is "one hundred twenty-one million, nine hundred forty-two thousand, two hundred sixty-nine".