2125641 has 8 divisors (see below), whose sum is σ = 3239104. Its totient is φ = 1214640.

The previous prime is 2125621. The next prime is 2125649. The reversal of 2125641 is 1465212.

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

It is not a de Polignac number, because 2125641 - 2¹⁷ = 1994569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 101221 = 2125641 / (2 + 1 + 2 + 5 + 6 + 4 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2125649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50590 + ... + 50631.

It is an arithmetic number, because the mean of its divisors is an integer number (404888).

2^2125641 is an apocalyptic number.

2125641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2125641 is a deficient number, since it is larger than the sum of its proper divisors (1113463).

2125641 is a wasteful number, since it uses less digits than its factorization.

2125641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101231.

The product of its digits is 480, while the sum is 21.

The square root of 2125641 is about 1457.9578183199. The cubic root of 2125641 is about 128.5770052255.

The spelling of 2125641 in words is "two million, one hundred twenty-five thousand, six hundred forty-one".