1550442 has 8 divisors (see below), whose sum is σ = 3100896. Its totient is φ = 516812.

The previous prime is 1550441. The next prime is 1550443. The reversal of 1550442 is 2440551.

It is an interprime number because it is at equal distance from previous prime (1550441) and next prime (1550443).

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

1550442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1550441) by changing a digit.

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, 129198 + ... + 129209.

It is an arithmetic number, because the mean of its divisors is an integer number (387612).

2^1550442 is an apocalyptic number.

1550442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1550442 is a wasteful number, since it uses less digits than its factorization.

1550442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258412.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1550442 is about 1245.1674586175. The cubic root of 1550442 is about 115.7404522008.

Adding to 1550442 its reverse (2440551), we get a palindrome (3990993).

The spelling of 1550442 in words is "one million, five hundred fifty thousand, four hundred forty-two".