740433122521221 has 8 divisors (see below), whose sum is σ = 987245131247424. Its totient is φ = 493621597737920.

The previous prime is 740433122521193. The next prime is 740433122521229. The reversal of 740433122521221 is 122125221334047.

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

It is a cyclic number.

It is not a de Polignac number, because 740433122521221 - 2⁹ = 740433122520709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 740433122521221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740433122521229) 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, 117400545 + ... + 123546566.

It is an arithmetic number, because the mean of its divisors is an integer number (123405641405928).

Almost surely, 2^{740433122521221} is an apocalyptic number.

It is an amenable number.

740433122521221 is a deficient number, since it is larger than the sum of its proper divisors (246812008726203).

740433122521221 is a wasteful number, since it uses less digits than its factorization.

740433122521221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241971451.

The product of its (nonzero) digits is 161280, while the sum is 39.

Adding to 740433122521221 its reverse (122125221334047), we get a palindrome (862558343855268).

The spelling of 740433122521221 in words is "seven hundred forty trillion, four hundred thirty-three billion, one hundred twenty-two million, five hundred twenty-one thousand, two hundred twenty-one".