1442100440 has 32 divisors (see below), whose sum is σ = 3539702160. Its totient is φ = 524400000.

The previous prime is 1442100431. The next prime is 1442100509. The reversal of 1442100440 is 440012441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1638311 + ... + 1639190.

Almost surely, 2^1442100440 is an apocalyptic number.

1442100440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442100440 is an abundant number, since it is smaller than the sum of its proper divisors (2097601720).

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

1442100440 is a wasteful number, since it uses less digits than its factorization.

1442100440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277523 (or 3277519 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1442100440 is about 37974.9975641869. The cubic root of 1442100440 is about 1129.7920206158.

Adding to 1442100440 its reverse (440012441), we get a palindrome (1882112881).

The spelling of 1442100440 in words is "one billion, four hundred forty-two million, one hundred thousand, four hundred forty".