140522478 has 16 divisors (see below), whose sum is σ = 282116736. Its totient is φ = 46662200.

The previous prime is 140522477. The next prime is 140522497. The reversal of 140522478 is 874225041.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140522471) 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 7 ways as a sum of consecutive naturals, for example, 42948 + ... + 46103.

It is an arithmetic number, because the mean of its divisors is an integer number (17632296).

Almost surely, 2^140522478 is an apocalyptic number.

140522478 is an abundant number, since it is smaller than the sum of its proper divisors (141594258).

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

140522478 is a wasteful number, since it uses less digits than its factorization.

140522478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89319.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 140522478 is about 11854.2177304114. The cubic root of 140522478 is about 519.8945520897.

The spelling of 140522478 in words is "one hundred forty million, five hundred twenty-two thousand, four hundred seventy-eight".