42709502745 has 384 divisors, whose sum is σ = 101073530880. Its totient is φ = 16930529280.

The previous prime is 42709502741. The next prime is 42709502813. The reversal of 42709502745 is 54720590724.

42709502745 is a `hidden beast` number, since 4 + 2 + 70 + 9 + 502 + 74 + 5 = 666.

It is not a de Polignac number, because 42709502745 - 2² = 42709502741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42709502745.

It is not an unprimeable number, because it can be changed into a prime (42709502741) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 98636049 + ... + 98636481.

It is an arithmetic number, because the mean of its divisors is an integer number (263212320).

Almost surely, 2^42709502745 is an apocalyptic number.

42709502745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42709502745 is an abundant number, since it is smaller than the sum of its proper divisors (58364028135).

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

42709502745 is a wasteful number, since it uses less digits than its factorization.

42709502745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 42709502745 in words is "forty-two billion, seven hundred nine million, five hundred two thousand, seven hundred forty-five".