42818545 has 16 divisors (see below), whose sum is σ = 64061568. Its totient is φ = 26691840.

The previous prime is 42818543. The next prime is 42818549. The reversal of 42818545 is 54581824.

It is not a de Polignac number, because 42818545 - 2¹ = 42818543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42818543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55224 + ... + 55993.

It is an arithmetic number, because the mean of its divisors is an integer number (4003848).

Almost surely, 2^42818545 is an apocalyptic number.

It is an amenable number.

42818545 is a deficient number, since it is larger than the sum of its proper divisors (21243023).

42818545 is a wasteful number, since it uses less digits than its factorization.

42818545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111240.

The product of its digits is 51200, while the sum is 37.

The square root of 42818545 is about 6543.5880830016. The cubic root of 42818545 is about 349.8463134778.

The spelling of 42818545 in words is "forty-two million, eight hundred eighteen thousand, five hundred forty-five".