1378140424542 has 128 divisors (see below), whose sum is σ = 3512027520000. Its totient is φ = 392408064000.

The previous prime is 1378140424517. The next prime is 1378140424559. The reversal of 1378140424542 is 2454240418731.

1378140424542 is a `hidden beast` number, since 1 + 3 + 7 + 81 + 4 + 0 + 4 + 24 + 542 = 666.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 143536542 + ... + 143546142.

It is an arithmetic number, because the mean of its divisors is an integer number (27437715000).

Almost surely, 2^{1378140424542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378140424542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756013760000).

1378140424542 is an abundant number, since it is smaller than the sum of its proper divisors (2133887095458).

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

1378140424542 is a wasteful number, since it uses less digits than its factorization.

1378140424542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10879 (or 10873 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 1378140424542 in words is "one trillion, three hundred seventy-eight billion, one hundred forty million, four hundred twenty-four thousand, five hundred forty-two".