405342527 has 2 divisors, whose sum is σ = 405342528. Its totient is φ = 405342526.

The previous prime is 405342521. The next prime is 405342557. The reversal of 405342527 is 725243504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405342527 - 2²⁶ = 338233663 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 405342493 and 405342502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405342521) 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, 202671263 + 202671264.

It is an arithmetic number, because the mean of its divisors is an integer number (202671264).

Almost surely, 2^405342527 is an apocalyptic number.

405342527 is a deficient number, since it is larger than the sum of its proper divisors (1).

405342527 is an equidigital number, since it uses as much as digits as its factorization.

405342527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 405342527 is about 20133.1201506374. The cubic root of 405342527 is about 740.0721423457.

The spelling of 405342527 in words is "four hundred five million, three hundred forty-two thousand, five hundred twenty-seven".