1002154203442 has 16 divisors (see below), whose sum is σ = 1777219277760. Its totient is φ = 414684497808.

The previous prime is 1002154203431. The next prime is 1002154203451. The reversal of 1002154203442 is 2443024512001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002154203442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234179648 + ... + 1234180459.

It is an arithmetic number, because the mean of its divisors is an integer number (111076204860).

Almost surely, 2^{1002154203442} is an apocalyptic number.

1002154203442 is a deficient number, since it is larger than the sum of its proper divisors (775065074318).

1002154203442 is a wasteful number, since it uses less digits than its factorization.

1002154203442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468360145.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 1002154203442 its reverse (2443024512001), we get a palindrome (3445178715443).

The spelling of 1002154203442 in words is "one trillion, two billion, one hundred fifty-four million, two hundred three thousand, four hundred forty-two".