405342545 has 8 divisors (see below), whose sum is σ = 486853224. Its totient is φ = 323979264.

The previous prime is 405342527. The next prime is 405342557. The reversal of 405342545 is 545243504.

It can be written as a sum of positive squares in 4 ways, for example, as 18079504 + 387263041 = 4252^2 + 19679^2 .

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 405342545 - 2¹⁴ = 405326161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30704 + ... + 41873.

It is an arithmetic number, because the mean of its divisors is an integer number (60856653).

Almost surely, 2^405342545 is an apocalyptic number.

It is an amenable number.

405342545 is a deficient number, since it is larger than the sum of its proper divisors (81510679).

405342545 is a wasteful number, since it uses less digits than its factorization.

405342545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73699.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 405342545 is about 20133.1205976620. The cubic root of 405342545 is about 740.0721533005.

The spelling of 405342545 in words is "four hundred five million, three hundred forty-two thousand, five hundred forty-five".