2142247507245 has 12 divisors (see below), whose sum is σ = 3713229012636. Its totient is φ = 1142532003840.

The previous prime is 2142247507237. The next prime is 2142247507261. The reversal of 2142247507245 is 5427057422412.

2142247507245 is a `hidden beast` number, since 21 + 42 + 2 + 47 + 507 + 2 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1151820486441 + 990427020804 = 1073229^2 + 995202^2 .

It is not a de Polignac number, because 2142247507245 - 2³ = 2142247507237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 47605500161 = 2142247507245 / (2 + 1 + 4 + 2 + 2 + 4 + 7 + 5 + 0 + 7 + 2 + 4 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2142247507245.

It is a congruent number.

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, 23802750036 + ... + 23802750125.

It is an arithmetic number, because the mean of its divisors is an integer number (309435751053).

Almost surely, 2^{2142247507245} is an apocalyptic number.

It is an amenable number.

2142247507245 is a deficient number, since it is larger than the sum of its proper divisors (1570981505391).

2142247507245 is a wasteful number, since it uses less digits than its factorization.

2142247507245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47605500172 (or 47605500169 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 45.

The spelling of 2142247507245 in words is "two trillion, one hundred forty-two billion, two hundred forty-seven million, five hundred seven thousand, two hundred forty-five".