1442420340 has 48 divisors (see below), whose sum is σ = 4251347520. Its totient is φ = 364400640.

The previous prime is 1442420327. The next prime is 1442420347. The reversal of 1442420340 is 430242441.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442420340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442420347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631501 + ... + 633780.

It is an arithmetic number, because the mean of its divisors is an integer number (88569740).

Almost surely, 2^1442420340 is an apocalyptic number.

1442420340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442420340 is an abundant number, since it is smaller than the sum of its proper divisors (2808927180).

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

1442420340 is a wasteful number, since it uses less digits than its factorization.

1442420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265312 (or 1265310 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1442420340 is about 37979.2093124646. The cubic root of 1442420340 is about 1129.8755547295.

Adding to 1442420340 its reverse (430242441), we get a palindrome (1872662781).

The spelling of 1442420340 in words is "one billion, four hundred forty-two million, four hundred twenty thousand, three hundred forty".