1240143230 has 16 divisors (see below), whose sum is σ = 2235174480. Its totient is φ = 495409152.

The previous prime is 1240143209. The next prime is 1240143253. The reversal of 1240143230 is 323410421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72944 + ... + 88323.

It is an arithmetic number, because the mean of its divisors is an integer number (139698405).

Almost surely, 2^1240143230 is an apocalyptic number.

1240143230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240143230 is a deficient number, since it is larger than the sum of its proper divisors (995031250).

1240143230 is a wasteful number, since it uses less digits than its factorization.

1240143230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162043.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1240143230 is about 35215.6673939314. The cubic root of 1240143230 is about 1074.3784342616.

Adding to 1240143230 its reverse (323410421), we get a palindrome (1563553651).

The spelling of 1240143230 in words is "one billion, two hundred forty million, one hundred forty-three thousand, two hundred thirty".