740465120421 has 24 divisors (see below), whose sum is σ = 1155586592160. Its totient is φ = 454186551456.

The previous prime is 740465120419. The next prime is 740465120431. The reversal of 740465120421 is 124021564047.

740465120421 is a `hidden beast` number, since 74 + 0 + 46 + 5 + 120 + 421 = 666.

It is not a de Polignac number, because 740465120421 - 2¹ = 740465120419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740465120431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10271511 + ... + 10343348.

It is an arithmetic number, because the mean of its divisors is an integer number (48149441340).

Almost surely, 2^740465120421 is an apocalyptic number.

It is an amenable number.

740465120421 is a deficient number, since it is larger than the sum of its proper divisors (415121471739).

740465120421 is a wasteful number, since it uses less digits than its factorization.

740465120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20615185 (or 20615182 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

Adding to 740465120421 its reverse (124021564047), we get a palindrome (864486684468).

The spelling of 740465120421 in words is "seven hundred forty billion, four hundred sixty-five million, one hundred twenty thousand, four hundred twenty-one".