243401142 has 16 divisors (see below), whose sum is σ = 491269680. Its totient is φ = 80389152.

The previous prime is 243401141. The next prime is 243401143. The reversal of 243401142 is 241104342.

It is an interprime number because it is at equal distance from previous prime (243401141) and next prime (243401143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243401141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 185433 + ... + 186740.

It is an arithmetic number, because the mean of its divisors is an integer number (30704355).

Almost surely, 2^243401142 is an apocalyptic number.

243401142 is an abundant number, since it is smaller than the sum of its proper divisors (247868538).

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

243401142 is a wasteful number, since it uses less digits than its factorization.

243401142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372287.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 243401142 is about 15601.3185981186. The cubic root of 243401142 is about 624.3683363233.

Adding to 243401142 its reverse (241104342), we get a palindrome (484505484).

The spelling of 243401142 in words is "two hundred forty-three million, four hundred one thousand, one hundred forty-two".