140404230 has 24 divisors (see below), whose sum is σ = 365051232. Its totient is φ = 37441104.

The previous prime is 140404217. The next prime is 140404237. The reversal of 140404230 is 32404041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 779934 + ... + 780113.

It is an arithmetic number, because the mean of its divisors is an integer number (15210468).

Almost surely, 2^140404230 is an apocalyptic number.

140404230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140404230 is an abundant number, since it is smaller than the sum of its proper divisors (224647002).

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

140404230 is a wasteful number, since it uses less digits than its factorization.

140404230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560060 (or 1560057 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 140404230 is about 11849.2290888479. The cubic root of 140404230 is about 519.7486827980.

Adding to 140404230 its reverse (32404041), we get a palindrome (172808271).

The spelling of 140404230 in words is "one hundred forty million, four hundred four thousand, two hundred thirty".