140144428 has 24 divisors (see below), whose sum is σ = 264176640. Its totient is φ = 64862160.

The previous prime is 140144423. The next prime is 140144429. The reversal of 140144428 is 824441041.

140144428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 140144396 and 140144405.

It is not an unprimeable number, because it can be changed into a prime (140144423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21718 + ... + 27421.

It is an arithmetic number, because the mean of its divisors is an integer number (11007360).

Almost surely, 2^140144428 is an apocalyptic number.

It is an amenable number.

140144428 is a deficient number, since it is larger than the sum of its proper divisors (124032212).

140144428 is a wasteful number, since it uses less digits than its factorization.

140144428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49197 (or 49195 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 140144428 is about 11838.2611898876. The cubic root of 140144428 is about 519.4279063277.

Adding to 140144428 its reverse (824441041), we get a palindrome (964585469).

The spelling of 140144428 in words is "one hundred forty million, one hundred forty-four thousand, four hundred twenty-eight".