121269643 has 8 divisors (see below), whose sum is σ = 132419376. Its totient is φ = 110140800.

The previous prime is 121269601. The next prime is 121269649. The reversal of 121269643 is 346962121.

It is a happy number.

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

It is not a de Polignac number, because 121269643 - 2¹⁷ = 121138571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121269599 and 121269608.

It is not an unprimeable number, because it can be changed into a prime (121269649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8503 + ... + 17743.

It is an arithmetic number, because the mean of its divisors is an integer number (16552422).

Almost surely, 2^121269643 is an apocalyptic number.

121269643 is a deficient number, since it is larger than the sum of its proper divisors (11149733).

121269643 is a wasteful number, since it uses less digits than its factorization.

121269643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10445.

The product of its digits is 15552, while the sum is 34.

The square root of 121269643 is about 11012.2496793344. The cubic root of 121269643 is about 494.9758761158.

The spelling of 121269643 in words is "one hundred twenty-one million, two hundred sixty-nine thousand, six hundred forty-three".