10420057 has 6 divisors (see below), whose sum is σ = 10512474. Its totient is φ = 10328400.

The previous prime is 10420009. The next prime is 10420079. The reversal of 10420057 is 75002401.

It can be written as a sum of positive squares in only one way, i.e., 10055241 + 364816 = 3171^2 + 604^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10420057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22573 + ... + 23029.

It is an arithmetic number, because the mean of its divisors is an integer number (1752079).

Almost surely, 2^10420057 is an apocalyptic number.

It is an amenable number.

10420057 is a deficient number, since it is larger than the sum of its proper divisors (92417).

10420057 is an frugal number, since it uses more digits than its factorization.

10420057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 10420057 is about 3228.0113072912. The cubic root of 10420057 is about 218.4188074457.

Adding to 10420057 its reverse (75002401), we get a palindrome (85422458).

The spelling of 10420057 in words is "ten million, four hundred twenty thousand, fifty-seven".