2100427 has 8 divisors (see below), whose sum is σ = 2414592. Its totient is φ = 1789800.

The previous prime is 2100409. The next prime is 2100451. The reversal of 2100427 is 7240012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100427 - 2¹⁹ = 1576139 is a prime.

It is a Duffinian number.

2100427 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100427.

It is not an unprimeable number, because it can be changed into a prime (2100407) 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, 552 + ... + 2122.

It is an arithmetic number, because the mean of its divisors is an integer number (301824).

2^2100427 is an apocalyptic number.

2100427 is a deficient number, since it is larger than the sum of its proper divisors (314165).

2100427 is a wasteful number, since it uses less digits than its factorization.

2100427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2100427 is about 1449.2849961274. The cubic root of 2100427 is about 128.0665953915.

Adding to 2100427 its reverse (7240012), we get a palindrome (9340439).

The spelling of 2100427 in words is "two million, one hundred thousand, four hundred twenty-seven".