1240442342 has 16 divisors (see below), whose sum is σ = 1867661712. Its totient is φ = 617893920.

The previous prime is 1240442327. The next prime is 1240442347. The reversal of 1240442342 is 2432440421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240442347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902768 + ... + 904140.

It is an arithmetic number, because the mean of its divisors is an integer number (116728857).

Almost surely, 2^1240442342 is an apocalyptic number.

1240442342 is a deficient number, since it is larger than the sum of its proper divisors (627219370).

1240442342 is a wasteful number, since it uses less digits than its factorization.

1240442342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1240442342 is about 35219.9139976236. The cubic root of 1240442342 is about 1074.4648042985.

Adding to 1240442342 its reverse (2432440421), we get a palindrome (3672882763).

The spelling of 1240442342 in words is "one billion, two hundred forty million, four hundred forty-two thousand, three hundred forty-two".