2140451 has 4 divisors (see below), whose sum is σ = 2143392. Its totient is φ = 2137512.

The previous prime is 2140447. The next prime is 2140459. The reversal of 2140451 is 1540412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2140451 - 2² = 2140447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140459) 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, 521 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (535848).

2^2140451 is an apocalyptic number.

2140451 is a deficient number, since it is larger than the sum of its proper divisors (2941).

2140451 is a wasteful number, since it uses less digits than its factorization.

2140451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940.

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

The square root of 2140451 is about 1463.0280243386. The cubic root of 2140451 is about 128.8749263456.

Adding to 2140451 its reverse (1540412), we get a palindrome (3680863).

The spelling of 2140451 in words is "two million, one hundred forty thousand, four hundred fifty-one".