140549378 has 18 divisors (see below), whose sum is σ = 215528457. Its totient is φ = 68740600.

The previous prime is 140549363. The next prime is 140549407. The reversal of 140549378 is 873945041.

It can be written as a sum of positive squares in 2 ways, for example, as 97555129 + 42994249 = 9877^2 + 6557^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8383.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1391528 + ... + 1391628.

Almost surely, 2^140549378 is an apocalyptic number.

140549378 is a deficient number, since it is larger than the sum of its proper divisors (74979079).

140549378 is an frugal number, since it uses more digits than its factorization.

140549378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 140549378 is about 11855.3522933737. The cubic root of 140549378 is about 519.9277241756.

It can be divided in two parts, 14054 and 9378, that added together give a palindrome (23432).

The spelling of 140549378 in words is "one hundred forty million, five hundred forty-nine thousand, three hundred seventy-eight".