1538242 has 8 divisors (see below), whose sum is σ = 2313036. Its totient is φ = 767232.

The previous prime is 1538233. The next prime is 1538261. The reversal of 1538242 is 2428351.

It can be written as a sum of positive squares in 2 ways, for example, as 1279161 + 259081 = 1131^2 + 509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538 + ... + 1834.

2^1538242 is an apocalyptic number.

1538242 is a deficient number, since it is larger than the sum of its proper divisors (774794).

1538242 is a wasteful number, since it uses less digits than its factorization.

1538242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892.

The product of its digits is 1920, while the sum is 25.

The square root of 1538242 is about 1240.2588439515. The cubic root of 1538242 is about 115.4360758947.

The spelling of 1538242 in words is "one million, five hundred thirty-eight thousand, two hundred forty-two".