2145201656142 has 8 divisors (see below), whose sum is σ = 4290403312296. Its totient is φ = 715067218712.

The previous prime is 2145201656131. The next prime is 2145201656159. The reversal of 2145201656142 is 2416561025412.

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

2145201656142 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2145201656142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178766804673 + ... + 178766804684.

It is an arithmetic number, because the mean of its divisors is an integer number (536300414037).

Almost surely, 2^{2145201656142} is an apocalyptic number.

2145201656142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2145201656142 is a wasteful number, since it uses less digits than its factorization.

2145201656142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357533609362.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 2145201656142 in words is "two trillion, one hundred forty-five billion, two hundred one million, six hundred fifty-six thousand, one hundred forty-two".