1142340240 has 40 divisors (see below), whose sum is σ = 3541255488. Its totient is φ = 304624000.

The previous prime is 1142340223. The next prime is 1142340253. The reversal of 1142340240 is 420432411.

It is a tau number, because it is divible by the number of its divisors (40).

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, 2379636 + ... + 2380115.

Almost surely, 2^1142340240 is an apocalyptic number.

1142340240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142340240 is an abundant number, since it is smaller than the sum of its proper divisors (2398915248).

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

1142340240 is a wasteful number, since it uses less digits than its factorization.

1142340240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759767 (or 4759761 counting only the distinct ones).

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

The square root of 1142340240 is about 33798.5242281375. The cubic root of 1142340240 is about 1045.3582679146.

Adding to 1142340240 its reverse (420432411), we get a palindrome (1562772651).

The spelling of 1142340240 in words is "one billion, one hundred forty-two million, three hundred forty thousand, two hundred forty".