243001402140 has 48 divisors (see below), whose sum is σ = 777604488192. Its totient is φ = 55543177536.

The previous prime is 243001402103. The next prime is 243001402223. The reversal of 243001402140 is 41204100342.

243001402140 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289286964 + ... + 289287803.

It is an arithmetic number, because the mean of its divisors is an integer number (16200093504).

Almost surely, 2^243001402140 is an apocalyptic number.

243001402140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243001402140 is an abundant number, since it is smaller than the sum of its proper divisors (534603086052).

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

243001402140 is a wasteful number, since it uses less digits than its factorization.

243001402140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578574786 (or 578574784 counting only the distinct ones).

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

Adding to 243001402140 its reverse (41204100342), we get a palindrome (284205502482).

The spelling of 243001402140 in words is "two hundred forty-three billion, one million, four hundred two thousand, one hundred forty".