42120526545 has 12 divisors (see below), whose sum is σ = 73008912756. Its totient is φ = 22464280800.

The previous prime is 42120526537. The next prime is 42120526559. The reversal of 42120526545 is 54562502124.

42120526545 is a `hidden beast` number, since 4 + 2 + 120 + 526 + 5 + 4 + 5 = 666.

42120526545 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 2 ways, for example, as 26449492689 + 15671033856 = 162633^2 + 125184^2 .

It is not a de Polignac number, because 42120526545 - 2³ = 42120526537 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468005806 + ... + 468005895.

It is an arithmetic number, because the mean of its divisors is an integer number (6084076063).

Almost surely, 2^42120526545 is an apocalyptic number.

42120526545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42120526545 is a deficient number, since it is larger than the sum of its proper divisors (30888386211).

42120526545 is a wasteful number, since it uses less digits than its factorization.

42120526545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936011712 (or 936011709 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 42120526545 in words is "forty-two billion, one hundred twenty million, five hundred twenty-six thousand, five hundred forty-five".