2642069 has 4 divisors (see below), whose sum is σ = 2646540. Its totient is φ = 2637600.

The previous prime is 2642063. The next prime is 2642077. The reversal of 2642069 is 9602462.

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 2235025 + 407044 = 1495^2 + 638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642069 is a prime.

It is a super-2 number, since 2×2642069² = 13961057201522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642063) 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, 1184 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (661635).

2^2642069 is an apocalyptic number.

It is an amenable number.

2642069 is a deficient number, since it is larger than the sum of its proper divisors (4471).

2642069 is an equidigital number, since it uses as much as digits as its factorization.

2642069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2642069 is about 1625.4442469676. Note that the first 3 decimals coincide. The cubic root of 2642069 is about 138.2445603886.

The spelling of 2642069 in words is "two million, six hundred forty-two thousand, sixty-nine".