140404234 has 8 divisors (see below), whose sum is σ = 211770468. Its totient is φ = 69814080.

The previous prime is 140404217. The next prime is 140404237. The reversal of 140404234 is 432404041.

It can be written as a sum of positive squares in 2 ways, for example, as 101304225 + 39100009 = 10065^2 + 6253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (140404237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193567 + ... + 194290.

Almost surely, 2^140404234 is an apocalyptic number.

140404234 is a deficient number, since it is larger than the sum of its proper divisors (71366234).

140404234 is a wasteful number, since it uses less digits than its factorization.

140404234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388040.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 140404234 is about 11849.2292576353. The cubic root of 140404234 is about 519.7486877338.

Adding to 140404234 its reverse (432404041), we get a palindrome (572808275).

The spelling of 140404234 in words is "one hundred forty million, four hundred four thousand, two hundred thirty-four".