1550242 has 4 divisors (see below), whose sum is σ = 2325366. Its totient is φ = 775120.

The previous prime is 1550233. The next prime is 1550243. The reversal of 1550242 is 2420551.

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., 1058841 + 491401 = 1029^2 + 701^2 .

It is not an unprimeable number, because it can be changed into a prime (1550243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387559 + ... + 387562.

2^1550242 is an apocalyptic number.

1550242 is a deficient number, since it is larger than the sum of its proper divisors (775124).

1550242 is an equidigital number, since it uses as much as digits as its factorization.

1550242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775123.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1550242 is about 1245.0871455444. The cubic root of 1550242 is about 115.7354753220.

Adding to 1550242 its reverse (2420551), we get a palindrome (3970793).

The spelling of 1550242 in words is "one million, five hundred fifty thousand, two hundred forty-two".