140243554 has 16 divisors (see below), whose sum is σ = 234828000. Its totient is φ = 62264160.

The previous prime is 140243549. The next prime is 140243563. The reversal of 140243554 is 455342041.

140243554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73179 + ... + 75070.

It is an arithmetic number, because the mean of its divisors is an integer number (14676750).

Almost surely, 2^140243554 is an apocalyptic number.

140243554 is a deficient number, since it is larger than the sum of its proper divisors (94584446).

140243554 is a wasteful number, since it uses less digits than its factorization.

140243554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148305.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 140243554 is about 11842.4471288666. The cubic root of 140243554 is about 519.5503435319.

Adding to 140243554 its reverse (455342041), we get a palindrome (595585595).

It can be divided in two parts, 14024 and 3554, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 140243554 in words is "one hundred forty million, two hundred forty-three thousand, five hundred fifty-four".