241136721 has 48 divisors (see below), whose sum is σ = 428508288. Its totient is φ = 127526400.

The previous prime is 241136719. The next prime is 241136729. The reversal of 241136721 is 127631142.

It is not a de Polignac number, because 241136721 - 2¹ = 241136719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (241136729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63486 + ... + 67176.

It is an arithmetic number, because the mean of its divisors is an integer number (8927256).

Almost surely, 2^241136721 is an apocalyptic number.

241136721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

241136721 is a deficient number, since it is larger than the sum of its proper divisors (187371567).

241136721 is a wasteful number, since it uses less digits than its factorization.

241136721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782 (or 3779 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 241136721 is about 15528.5775588107. The cubic root of 241136721 is about 622.4260830605.

Adding to 241136721 its reverse (127631142), we get a palindrome (368767863).

The spelling of 241136721 in words is "two hundred forty-one million, one hundred thirty-six thousand, seven hundred twenty-one".