42040521345 has 16 divisors (see below), whose sum is σ = 67267884672. Its totient is φ = 22420594560.

The previous prime is 42040521337. The next prime is 42040521353. The reversal of 42040521345 is 54312504024.

42040521345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42040521337) and next prime (42040521353).

It is not a de Polignac number, because 42040521345 - 2³ = 42040521337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376540 + ... + 475250.

It is an arithmetic number, because the mean of its divisors is an integer number (4204242792).

Almost surely, 2^42040521345 is an apocalyptic number.

It is an amenable number.

42040521345 is a deficient number, since it is larger than the sum of its proper divisors (25227363327).

42040521345 is a wasteful number, since it uses less digits than its factorization.

42040521345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127112.

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 42040521345 in words is "forty-two billion, forty million, five hundred twenty-one thousand, three hundred forty-five".