229242140 has 48 divisors (see below), whose sum is σ = 493637760. Its totient is φ = 89394240.

The previous prime is 229242133. The next prime is 229242149. The reversal of 229242140 is 41242922.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229242149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153839 + ... + 155321.

It is an arithmetic number, because the mean of its divisors is an integer number (10284120).

Almost surely, 2^229242140 is an apocalyptic number.

229242140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229242140 is an abundant number, since it is smaller than the sum of its proper divisors (264395620).

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

229242140 is a wasteful number, since it uses less digits than its factorization.

229242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 229242140 is about 15140.7443674345. The cubic root of 229242140 is about 612.0188774845.

The spelling of 229242140 in words is "two hundred twenty-nine million, two hundred forty-two thousand, one hundred forty".