140004144 has 60 divisors (see below), whose sum is σ = 447794256. Its totient is φ = 40000896.

The previous prime is 140004143. The next prime is 140004169. The reversal of 140004144 is 441400041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (140004143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68439 + ... + 70454.

Almost surely, 2^140004144 is an apocalyptic number.

140004144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

140004144 is an abundant number, since it is smaller than the sum of its proper divisors (307790112).

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

140004144 is a wasteful number, since it uses less digits than its factorization.

140004144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138914 (or 138905 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 140004144 is about 11832.3346808650. The cubic root of 140004144 is about 519.2545333954.

Adding to 140004144 its reverse (441400041), we get a palindrome (581404185).

The spelling of 140004144 in words is "one hundred forty million, four thousand, one hundred forty-four".