42015455545 has 32 divisors (see below), whose sum is σ = 61277299200. Its totient is φ = 26997359616.

The previous prime is 42015455543. The next prime is 42015455623. The reversal of 42015455545 is 54555451024.

It is a cyclic number.

It is not a de Polignac number, because 42015455545 - 2¹ = 42015455543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42015455498 and 42015455507.

It is not an unprimeable number, because it can be changed into a prime (42015455543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17925 + ... + 290434.

It is an arithmetic number, because the mean of its divisors is an integer number (1914915600).

Almost surely, 2^42015455545 is an apocalyptic number.

It is an amenable number.

42015455545 is a deficient number, since it is larger than the sum of its proper divisors (19261843655).

42015455545 is a wasteful number, since it uses less digits than its factorization.

42015455545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308617.

The product of its (nonzero) digits is 400000, while the sum is 40.

The spelling of 42015455545 in words is "forty-two billion, fifteen million, four hundred fifty-five thousand, five hundred forty-five".