1442531340 has 72 divisors (see below), whose sum is σ = 4526580240. Its totient is φ = 371409024.

The previous prime is 1442531333. The next prime is 1442531351. The reversal of 1442531340 is 431352441.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132954 + ... + 143393.

It is an arithmetic number, because the mean of its divisors is an integer number (62869170).

Almost surely, 2^1442531340 is an apocalyptic number.

1442531340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442531340 is an abundant number, since it is smaller than the sum of its proper divisors (3084048900).

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

1442531340 is a wasteful number, since it uses less digits than its factorization.

1442531340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276391 (or 276386 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1442531340 is about 37980.6706101933. The cubic root of 1442531340 is about 1129.9045367967.

Adding to 1442531340 its reverse (431352441), we get a palindrome (1873883781).

The spelling of 1442531340 in words is "one billion, four hundred forty-two million, five hundred thirty-one thousand, three hundred forty".