140287954 has 4 divisors (see below), whose sum is σ = 210431934. Its totient is φ = 70143976.

The previous prime is 140287933. The next prime is 140288003. The reversal of 140287954 is 459782041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 459782041 = 479 ⋅959879.

It can be written as a sum of positive squares in only one way, i.e., 137475625 + 2812329 = 11725^2 + 1677^2 .

It is a super-2 number, since 2×140287954² = 39361420075012232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35071987 + ... + 35071990.

Almost surely, 2^140287954 is an apocalyptic number.

140287954 is a deficient number, since it is larger than the sum of its proper divisors (70143980).

140287954 is an equidigital number, since it uses as much as digits as its factorization.

140287954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70143979.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 140287954 is about 11844.3215930673. The cubic root of 140287954 is about 519.6051662567.

The spelling of 140287954 in words is "one hundred forty million, two hundred eighty-seven thousand, nine hundred fifty-four".