2620742 has 4 divisors (see below), whose sum is σ = 3931116. Its totient is φ = 1310370.

The previous prime is 2620741. The next prime is 2620811. The reversal of 2620742 is 2470262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2470262 = 2 ⋅1235131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655184 + ... + 655187.

It is an arithmetic number, because the mean of its divisors is an integer number (982779).

2^2620742 is an apocalyptic number.

2620742 is a deficient number, since it is larger than the sum of its proper divisors (1310374).

2620742 is a wasteful number, since it uses less digits than its factorization.

2620742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310373.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 2620742 is about 1618.8705939636. The cubic root of 2620742 is about 137.8715811573.

The spelling of 2620742 in words is "two million, six hundred twenty thousand, seven hundred forty-two".