140243444 has 24 divisors (see below), whose sum is σ = 268207968. Its totient is φ = 63635040.

The previous prime is 140243437. The next prime is 140243497. The reversal of 140243444 is 444342041.

It is a happy number.

It is a super-2 number, since 2×140243444² = 39336447169962272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25814 + ... + 30770.

It is an arithmetic number, because the mean of its divisors is an integer number (11175332).

Almost surely, 2^140243444 is an apocalyptic number.

It is an amenable number.

140243444 is a deficient number, since it is larger than the sum of its proper divisors (127964524).

140243444 is a wasteful number, since it uses less digits than its factorization.

140243444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5615 (or 5613 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 140243444 is about 11842.4424845553. The cubic root of 140243444 is about 519.5502076954.

Adding to 140243444 its reverse (444342041), we get a palindrome (584585485).

The spelling of 140243444 in words is "one hundred forty million, two hundred forty-three thousand, four hundred forty-four".