2040457 has 2 divisors, whose sum is σ = 2040458. Its totient is φ = 2040456.

The previous prime is 2040449. The next prime is 2040461. The reversal of 2040457 is 7540402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2013561 + 26896 = 1419^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040457 - 2³ = 2040449 is a prime.

It is not a weakly prime, because it can be changed into another prime (2040407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020228 + 1020229.

It is an arithmetic number, because the mean of its divisors is an integer number (1020229).

2^2040457 is an apocalyptic number.

It is an amenable number.

2040457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040457 is an equidigital number, since it uses as much as digits as its factorization.

2040457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 2040457 is about 1428.4456587494. The cubic root of 2040457 is about 126.8359839426.

Adding to 2040457 its reverse (7540402), we get a palindrome (9580859).

Subtracting 2040457 from its reverse (7540402), we obtain a palindrome (5499945).

The spelling of 2040457 in words is "two million, forty thousand, four hundred fifty-seven".