140143234 has 24 divisors (see below), whose sum is σ = 266768208. Its totient is φ = 54600840.

The previous prime is 140143229. The next prime is 140143243. The reversal of 140143234 is 432341041.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63924 + ... + 66079.

It is an arithmetic number, because the mean of its divisors is an integer number (11115342).

Almost surely, 2^140143234 is an apocalyptic number.

140143234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140143234 is a deficient number, since it is larger than the sum of its proper divisors (126624974).

140143234 is a wasteful number, since it uses less digits than its factorization.

140143234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130030 (or 130023 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140143234 is about 11838.2107600769. The cubic root of 140143234 is about 519.4264311860.

Adding to 140143234 its reverse (432341041), we get a palindrome (572484275).

The spelling of 140143234 in words is "one hundred forty million, one hundred forty-three thousand, two hundred thirty-four".