2542121 has 4 divisors (see below), whose sum is σ = 2652672. Its totient is φ = 2431572.

The previous prime is 2542109. The next prime is 2542139. The reversal of 2542121 is 1212452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2542121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2542121.

It is not an unprimeable number, because it can be changed into a prime (2542151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55241 + ... + 55286.

It is an arithmetic number, because the mean of its divisors is an integer number (663168).

2^2542121 is an apocalyptic number.

It is an amenable number.

2542121 is a deficient number, since it is larger than the sum of its proper divisors (110551).

2542121 is a wasteful number, since it uses less digits than its factorization.

2542121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110550.

The product of its digits is 160, while the sum is 17.

The square root of 2542121 is about 1594.4030230779. The cubic root of 2542121 is about 136.4788662509.

Adding to 2542121 its reverse (1212452), we get a palindrome (3754573).

The spelling of 2542121 in words is "two million, five hundred forty-two thousand, one hundred twenty-one".