2140457 has 8 divisors (see below), whose sum is σ = 2410752. Its totient is φ = 1882800.

The previous prime is 2140447. The next prime is 2140459. The reversal of 2140457 is 7540412.

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 2140457 - 2⁴ = 2140441 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 7 ways as a sum of consecutive naturals, for example, 2798 + ... + 3479.

It is an arithmetic number, because the mean of its divisors is an integer number (301344).

2^2140457 is an apocalyptic number.

It is an amenable number.

2140457 is a deficient number, since it is larger than the sum of its proper divisors (270295).

2140457 is a wasteful number, since it uses less digits than its factorization.

2140457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 2140457 is about 1463.0300748788. The cubic root of 2140457 is about 128.8750467640.

Adding to 2140457 its reverse (7540412), we get a palindrome (9680869).

The spelling of 2140457 in words is "two million, one hundred forty thousand, four hundred fifty-seven".