1377850842 has 24 divisors (see below), whose sum is σ = 3088287540. Its totient is φ = 443446080.

The previous prime is 1377850841. The next prime is 1377850847. The reversal of 1377850842 is 2480587731.

1377850842 is a `hidden beast` number, since 1 + 37 + 78 + 508 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1262309841 + 115541001 = 35529^2 + 10749^2 .

It is not an unprimeable number, because it can be changed into a prime (1377850841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1319259 + ... + 1320302.

Almost surely, 2^1377850842 is an apocalyptic number.

1377850842 is an abundant number, since it is smaller than the sum of its proper divisors (1710436698).

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

1377850842 is a wasteful number, since it uses less digits than its factorization.

1377850842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639598 (or 2639595 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 1377850842 is about 37119.4132766131. The cubic root of 1377850842 is about 1112.7580257795.

It can be divided in two parts, 13778 and 50842, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 1377850842 in words is "one billion, three hundred seventy-seven million, eight hundred fifty thousand, eight hundred forty-two".