2112457 has 4 divisors (see below), whose sum is σ = 2120580. Its totient is φ = 2104336.

The previous prime is 2112419. The next prime is 2112469. The reversal of 2112457 is 7542112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84681 + 2027776 = 291^2 + 1424^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112457 - 2⁷ = 2112329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115457) 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, 3658 + ... + 4195.

It is an arithmetic number, because the mean of its divisors is an integer number (530145).

2^2112457 is an apocalyptic number.

It is an amenable number.

2112457 is a deficient number, since it is larger than the sum of its proper divisors (8123).

2112457 is an equidigital number, since it uses as much as digits as its factorization.

2112457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8122.

The product of its digits is 560, while the sum is 22.

The square root of 2112457 is about 1453.4293928499. The cubic root of 2112457 is about 128.3106265930.

Adding to 2112457 its reverse (7542112), we get a palindrome (9654569).

The spelling of 2112457 in words is "two million, one hundred twelve thousand, four hundred fifty-seven".