140213954 has 4 divisors (see below), whose sum is σ = 210320934. Its totient is φ = 70106976.

The previous prime is 140213873. The next prime is 140213963. The reversal of 140213954 is 459312041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 459312041 = 8693 ⋅52837.

It can be written as a sum of positive squares in only one way, i.e., 121594729 + 18619225 = 11027^2 + 4315^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35053487 + ... + 35053490.

Almost surely, 2^140213954 is an apocalyptic number.

140213954 is a deficient number, since it is larger than the sum of its proper divisors (70106980).

140213954 is an equidigital number, since it uses as much as digits as its factorization.

140213954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70106979.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 140213954 is about 11841.1973212171. The cubic root of 140213954 is about 519.5137886201.

Adding to 140213954 its reverse (459312041), we get a palindrome (599525995).

The spelling of 140213954 in words is "one hundred forty million, two hundred thirteen thousand, nine hundred fifty-four".