2638042 has 16 divisors (see below), whose sum is σ = 4356864. Its totient is φ = 1197900.

The previous prime is 2638039. The next prime is 2638057. The reversal of 2638042 is 2408362.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2637998 and 2638016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167 + ... + 3157.

It is an arithmetic number, because the mean of its divisors is an integer number (272304).

2^2638042 is an apocalyptic number.

2638042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2638042 is a deficient number, since it is larger than the sum of its proper divisors (1718822).

2638042 is an equidigital number, since it uses as much as digits as its factorization.

2638042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2638042 is about 1624.2050363178. The cubic root of 2638042 is about 138.1742879459.

The spelling of 2638042 in words is "two million, six hundred thirty-eight thousand, forty-two".