2720042 has 16 divisors (see below), whose sum is σ = 4422600. Its totient is φ = 1247232.

The previous prime is 2720009. The next prime is 2720071. The reversal of 2720042 is 2400272.

It can be written as a sum of positive squares in 4 ways, for example, as 1615441 + 1104601 = 1271^2 + 1051^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2720042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5834 + ... + 6282.

2^2720042 is an apocalyptic number.

2720042 is a deficient number, since it is larger than the sum of its proper divisors (1702558).

2720042 is a wasteful number, since it uses less digits than its factorization.

2720042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 2720042 is about 1649.2549833182. The cubic root of 2720042 is about 139.5913594157.

The spelling of 2720042 in words is "two million, seven hundred twenty thousand, forty-two".