1550142 has 24 divisors (see below), whose sum is σ = 3664440. Its totient is φ = 469680.

The previous prime is 1550141. The next prime is 1550147. The reversal of 1550142 is 2410551.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3717 + ... + 4112.

It is an arithmetic number, because the mean of its divisors is an integer number (152685).

2^1550142 is an apocalyptic number.

1550142 is an abundant number, since it is smaller than the sum of its proper divisors (2114298).

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

1550142 is a wasteful number, since it uses less digits than its factorization.

1550142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848 (or 7845 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1550142 is about 1245.0469870651. The cubic root of 1550142 is about 115.7329867221.

Adding to 1550142 its reverse (2410551), we get a palindrome (3960693).

The spelling of 1550142 in words is "one million, five hundred fifty thousand, one hundred forty-two".