121141649 has 4 divisors (see below), whose sum is σ = 121179060. Its totient is φ = 121104240.

The previous prime is 121141639. The next prime is 121141717. The reversal of 121141649 is 946141121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 946141121 = 2741 ⋅345181.

It can be written as a sum of positive squares in 2 ways, for example, as 98863249 + 22278400 = 9943^2 + 4720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121141649 is a prime.

It is a super-3 number, since 3×121141649³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121141639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13334 + ... + 20495.

It is an arithmetic number, because the mean of its divisors is an integer number (30294765).

Almost surely, 2^121141649 is an apocalyptic number.

It is an amenable number.

121141649 is a deficient number, since it is larger than the sum of its proper divisors (37411).

121141649 is an equidigital number, since it uses as much as digits as its factorization.

121141649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37410.

The product of its digits is 1728, while the sum is 29.

The square root of 121141649 is about 11006.4367076725. The cubic root of 121141649 is about 494.8016741122.

The spelling of 121141649 in words is "one hundred twenty-one million, one hundred forty-one thousand, six hundred forty-nine".