57042172145 has 8 divisors (see below), whose sum is σ = 78229264704. Its totient is φ = 39114632304.

The previous prime is 57042172129. The next prime is 57042172157. The reversal of 57042172145 is 54127124075.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57042172145 - 2⁴ = 57042172129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57042172099 and 57042172108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814888139 + ... + 814888208.

It is an arithmetic number, because the mean of its divisors is an integer number (9778658088).

Almost surely, 2^57042172145 is an apocalyptic number.

It is an amenable number.

57042172145 is a deficient number, since it is larger than the sum of its proper divisors (21187092559).

57042172145 is a wasteful number, since it uses less digits than its factorization.

57042172145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629776359.

The product of its (nonzero) digits is 78400, while the sum is 38.

The spelling of 57042172145 in words is "fifty-seven billion, forty-two million, one hundred seventy-two thousand, one hundred forty-five".