1533442 has 4 divisors (see below), whose sum is σ = 2300166. Its totient is φ = 766720.

The previous prime is 1533439. The next prime is 1533443. The reversal of 1533442 is 2443351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 531441 = 1001^2 + 729^2 .

It is not an unprimeable number, because it can be changed into a prime (1533443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383359 + ... + 383362.

2^1533442 is an apocalyptic number.

1533442 is a deficient number, since it is larger than the sum of its proper divisors (766724).

1533442 is an equidigital number, since it uses as much as digits as its factorization.

1533442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766723.

The product of its digits is 1440, while the sum is 22.

The square root of 1533442 is about 1238.3222520814. The cubic root of 1533442 is about 115.3158801334.

Adding to 1533442 its reverse (2443351), we get a palindrome (3976793).

Subtracting 1533442 from its reverse (2443351), we obtain a palindrome (909909).

It can be divided in two parts, 15334 and 42, that added together give a square (15376 = 124²).

The spelling of 1533442 in words is "one million, five hundred thirty-three thousand, four hundred forty-two".