2550042 has 64 divisors (see below), whose sum is σ = 6376320. Its totient is φ = 758160.

The previous prime is 2550019. The next prime is 2550059. The reversal of 2550042 is 2400552.

2550042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 2549997 and 2550024.

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 in 31 ways as a sum of consecutive naturals, for example, 48088 + ... + 48140.

It is an arithmetic number, because the mean of its divisors is an integer number (99630).

2^2550042 is an apocalyptic number.

2550042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2550042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3188160).

2550042 is an abundant number, since it is smaller than the sum of its proper divisors (3826278).

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

2550042 is an equidigital number, since it uses as much as digits as its factorization.

2550042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2550042 is about 1596.8850929231. The cubic root of 2550042 is about 136.6204708697.

Adding to 2550042 its reverse (2400552), we get a palindrome (4950594).

The spelling of 2550042 in words is "two million, five hundred fifty thousand, forty-two".