1550220442 has 16 divisors (see below), whose sum is σ = 2338243200. Its totient is φ = 770815360.

The previous prime is 1550220439. The next prime is 1550220443. The reversal of 1550220442 is 2440220551.

It is not an unprimeable number, because it can be changed into a prime (1550220443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442317 + ... + 445807.

It is an arithmetic number, because the mean of its divisors is an integer number (146140200).

Almost surely, 2^1550220442 is an apocalyptic number.

1550220442 is a deficient number, since it is larger than the sum of its proper divisors (788022758).

1550220442 is a wasteful number, since it uses less digits than its factorization.

1550220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1550220442 is about 39372.8388867249. The cubic root of 1550220442 is about 1157.3493883870.

Adding to 1550220442 its reverse (2440220551), we get a palindrome (3990440993).

The spelling of 1550220442 in words is "one billion, five hundred fifty million, two hundred twenty thousand, four hundred forty-two".