1442751640 has 32 divisors (see below), whose sum is σ = 3541300560. Its totient is φ = 524636800.

The previous prime is 1442751599. The next prime is 1442751671. The reversal of 1442751640 is 461572441.

It is a junction number, because it is equal to n+sod(n) for n = 1442751596 and 1442751605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1639051 + ... + 1639930.

Almost surely, 2^1442751640 is an apocalyptic number.

1442751640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442751640 is an abundant number, since it is smaller than the sum of its proper divisors (2098548920).

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

1442751640 is a wasteful number, since it uses less digits than its factorization.

1442751640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279003 (or 3278999 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1442751640 is about 37983.5706589046. The cubic root of 1442751640 is about 1129.9620526584.

The spelling of 1442751640 in words is "one billion, four hundred forty-two million, seven hundred fifty-one thousand, six hundred forty".