1442538 has 12 divisors (see below), whose sum is σ = 3125538. Its totient is φ = 480840.

The previous prime is 1442531. The next prime is 1442549. The reversal of 1442538 is 8352441.

It can be written as a sum of positive squares in only one way, i.e., 1292769 + 149769 = 1137^2 + 387^2 .

It is not an unprimeable number, because it can be changed into a prime (1442531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40053 + ... + 40088.

2^1442538 is an apocalyptic number.

1442538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1442538 is an abundant number, since it is smaller than the sum of its proper divisors (1683000).

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

1442538 is a wasteful number, since it uses less digits than its factorization.

1442538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80149 (or 80146 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1442538 is about 1201.0570344492. The cubic root of 1442538 is about 112.9906275673.

Adding to 1442538 its reverse (8352441), we get a palindrome (9794979).

Subtracting 1442538 from its reverse (8352441), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1442538 in words is "one million, four hundred forty-two thousand, five hundred thirty-eight".