27428920142 has 32 divisors (see below), whose sum is σ = 45593621472. Its totient is φ = 12293576064.

The previous prime is 27428920139. The next prime is 27428920171. The reversal of 27428920142 is 24102982472.

It is a self number, because there is not a number n which added to its sum of digits gives 27428920142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475868 + ... + 530384.

It is an arithmetic number, because the mean of its divisors is an integer number (1424800671).

Almost surely, 2^27428920142 is an apocalyptic number.

27428920142 is a deficient number, since it is larger than the sum of its proper divisors (18164701330).

27428920142 is a wasteful number, since it uses less digits than its factorization.

27428920142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55092.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 27428920142 in words is "twenty-seven billion, four hundred twenty-eight million, nine hundred twenty thousand, one hundred forty-two".