1553042 has 4 divisors (see below), whose sum is σ = 2329566. Its totient is φ = 776520.

The previous prime is 1553023. The next prime is 1553053. The reversal of 1553042 is 2403551.

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., 1485961 + 67081 = 1219^2 + 259^2 .

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 as a sum of consecutive naturals, namely, 388259 + ... + 388262.

2^1553042 is an apocalyptic number.

1553042 is a deficient number, since it is larger than the sum of its proper divisors (776524).

1553042 is an equidigital number, since it uses as much as digits as its factorization.

1553042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776523.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1553042 is about 1246.2110575661. The cubic root of 1553042 is about 115.8051127129.

Adding to 1553042 its reverse (2403551), we get a palindrome (3956593).

The spelling of 1553042 in words is "one million, five hundred fifty-three thousand, forty-two".