2742151 has 4 divisors (see below), whose sum is σ = 2903472. Its totient is φ = 2580832.

The previous prime is 2742139. The next prime is 2742161. The reversal of 2742151 is 1512472.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2742151 - 2⁵ = 2742119 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

2742151 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80635 + ... + 80668.

It is an arithmetic number, because the mean of its divisors is an integer number (725868).

2^2742151 is an apocalyptic number.

2742151 is a deficient number, since it is larger than the sum of its proper divisors (161321).

2742151 is a wasteful number, since it uses less digits than its factorization.

2742151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161320.

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

The square root of 2742151 is about 1655.9441415700. The cubic root of 2742151 is about 139.9685473561.

It can be divided in two parts, 27421 and 51, that added together give a palindrome (27472).

The spelling of 2742151 in words is "two million, seven hundred forty-two thousand, one hundred fifty-one".