42366545 has 8 divisors (see below), whose sum is σ = 54750696. Its totient is φ = 31286016.

The previous prime is 42366539. The next prime is 42366547. The reversal of 42366545 is 54566324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1700416 + 40666129 = 1304^2 + 6377^2 .

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 42366545 - 2²⁴ = 25589329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42366547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325832 + ... + 325961.

It is an arithmetic number, because the mean of its divisors is an integer number (6843837).

Almost surely, 2^42366545 is an apocalyptic number.

It is an amenable number.

42366545 is a deficient number, since it is larger than the sum of its proper divisors (12384151).

42366545 is a wasteful number, since it uses less digits than its factorization.

42366545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651811.

The product of its digits is 86400, while the sum is 35.

The square root of 42366545 is about 6508.9588261104. The cubic root of 42366545 is about 348.6109434782.

The spelling of 42366545 in words is "forty-two million, three hundred sixty-six thousand, five hundred forty-five".