405140741 has 2 divisors, whose sum is σ = 405140742. Its totient is φ = 405140740.

The previous prime is 405140731. The next prime is 405140783. The reversal of 405140741 is 147041504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403809025 + 1331716 = 20095^2 + 1154^2 .

It is a cyclic number.

It is not a de Polignac number, because 405140741 - 2¹⁸ = 404878597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405140741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405140731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202570370 + 202570371.

It is an arithmetic number, because the mean of its divisors is an integer number (202570371).

Almost surely, 2^405140741 is an apocalyptic number.

It is an amenable number.

405140741 is a deficient number, since it is larger than the sum of its proper divisors (1).

405140741 is an equidigital number, since it uses as much as digits as its factorization.

405140741 is an odious number, because the sum of its binary digits is odd.

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

The square root of 405140741 is about 20128.1082320222. The cubic root of 405140741 is about 739.9493153744.

The spelling of 405140741 in words is "four hundred five million, one hundred forty thousand, seven hundred forty-one".