241721045 has 18 divisors (see below), whose sum is σ = 308886822. Its totient is φ = 181556736.

The previous prime is 241721033. The next prime is 241721083. The reversal of 241721045 is 540127142.

It can be written as a sum of positive squares in 9 ways, for example, as 23833924 + 217887121 = 4882^2 + 14761^2 .

It is not a de Polignac number, because 241721045 - 2¹² = 241716949 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 590801 + ... + 591209.

It is an arithmetic number, because the mean of its divisors is an integer number (17160379).

Almost surely, 2^241721045 is an apocalyptic number.

It is an amenable number.

241721045 is a deficient number, since it is larger than the sum of its proper divisors (67165777).

241721045 is an frugal number, since it uses more digits than its factorization.

241721045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 241721045 is about 15547.3806475560. The cubic root of 241721045 is about 622.9284330963.

Adding to 241721045 its reverse (540127142), we get a palindrome (781848187).

The spelling of 241721045 in words is "two hundred forty-one million, seven hundred twenty-one thousand, forty-five".