42852440394 has 20 divisors (see below), whose sum is σ = 96021209394. Its totient is φ = 14284146744.

The previous prime is 42852440369. The next prime is 42852440399. The reversal of 42852440394 is 49304425824.

42852440394 is a `hidden beast` number, since 42 + 85 + 2 + 440 + 3 + 94 = 666.

42852440394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39579113025 + 3273327369 = 198945^2 + 57213^2 .

It is not an unprimeable number, because it can be changed into a prime (42852440399) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 132260457 + ... + 132260780.

Almost surely, 2^42852440394 is an apocalyptic number.

42852440394 is an abundant number, since it is smaller than the sum of its proper divisors (53168769000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42852440394 is a wasteful number, since it uses less digits than its factorization.

42852440394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264521251 (or 264521242 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 42852440394 in words is "forty-two billion, eight hundred fifty-two million, four hundred forty thousand, three hundred ninety-four".