2642457 has 4 divisors (see below), whose sum is σ = 3523280. Its totient is φ = 1761636.

The previous prime is 2642449. The next prime is 2642473. The reversal of 2642457 is 7542462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2642457 - 2³ = 2642449 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642257) 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, 440407 + ... + 440412.

It is an arithmetic number, because the mean of its divisors is an integer number (880820).

2^2642457 is an apocalyptic number.

It is an amenable number.

2642457 is a deficient number, since it is larger than the sum of its proper divisors (880823).

2642457 is an equidigital number, since it uses as much as digits as its factorization.

2642457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880822.

The product of its digits is 13440, while the sum is 30.

The square root of 2642457 is about 1625.5635945727. The cubic root of 2642457 is about 138.2513273408.

The spelling of 2642457 in words is "two million, six hundred forty-two thousand, four hundred fifty-seven".