42545893 has 16 divisors (see below), whose sum is σ = 47401200. Its totient is φ = 37933056.

The previous prime is 42545891. The next prime is 42545927. The reversal of 42545893 is 39854524.

It can be written as a sum of positive squares in 8 ways, for example, as 6749604 + 35796289 = 2598^2 + 5983^2 .

It is a cyclic number.

It is not a de Polignac number, because 42545893 - 2¹ = 42545891 is a prime.

It is a super-2 number, since 2×42545893² = 3620306022334898, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42545891) 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, 94533 + ... + 94981.

It is an arithmetic number, because the mean of its divisors is an integer number (2962575).

Almost surely, 2^42545893 is an apocalyptic number.

It is an amenable number.

42545893 is a deficient number, since it is larger than the sum of its proper divisors (4855307).

42545893 is a wasteful number, since it uses less digits than its factorization.

42545893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its digits is 172800, while the sum is 40.

The square root of 42545893 is about 6522.7212879288. The cubic root of 42545893 is about 349.1021695763.

The spelling of 42545893 in words is "forty-two million, five hundred forty-five thousand, eight hundred ninety-three".