140287144 has 8 divisors (see below), whose sum is σ = 263038410. Its totient is φ = 70143568.

The previous prime is 140287141. The next prime is 140287153. The reversal of 140287144 is 441782041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 136002244 + 4284900 = 11662^2 + 2070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (140287141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8767939 + ... + 8767954.

Almost surely, 2^140287144 is an apocalyptic number.

It is an amenable number.

140287144 is a deficient number, since it is larger than the sum of its proper divisors (122751266).

140287144 is a wasteful number, since it uses less digits than its factorization.

140287144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17535899 (or 17535895 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 140287144 is about 11844.2873994175. The cubic root of 140287144 is about 519.6041662160.

The spelling of 140287144 in words is "one hundred forty million, two hundred eighty-seven thousand, one hundred forty-four".