140209354 has 32 divisors (see below), whose sum is σ = 222642000. Its totient is φ = 66147840.

The previous prime is 140209351. The next prime is 140209393. The reversal of 140209354 is 453902041.

140209354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 53626329 + 86583025 = 7323^2 + 9305^2 .

It is not an unprimeable number, because it can be changed into a prime (140209351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401572 + ... + 401920.

Almost surely, 2^140209354 is an apocalyptic number.

140209354 is a deficient number, since it is larger than the sum of its proper divisors (82432646).

140209354 is a wasteful number, since it uses less digits than its factorization.

140209354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 140209354 is about 11841.0030825095. The cubic root of 140209354 is about 519.5081073273.

The spelling of 140209354 in words is "one hundred forty million, two hundred nine thousand, three hundred fifty-four".