140304234 has 16 divisors (see below), whose sum is σ = 320695488. Its totient is φ = 40086912.

The previous prime is 140304223. The next prime is 140304253. The reversal of 140304234 is 432403041.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 140304234.

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, 1670247 + ... + 1670330.

It is an arithmetic number, because the mean of its divisors is an integer number (20043468).

Almost surely, 2^140304234 is an apocalyptic number.

140304234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140304234 is an abundant number, since it is smaller than the sum of its proper divisors (180391254).

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

140304234 is a wasteful number, since it uses less digits than its factorization.

140304234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340589.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 140304234 is about 11845.0088222846. The cubic root of 140304234 is about 519.6252650242.

Adding to 140304234 its reverse (432403041), we get a palindrome (572707275).

The spelling of 140304234 in words is "one hundred forty million, three hundred four thousand, two hundred thirty-four".