2742147 has 8 divisors (see below), whose sum is σ = 4062480. Its totient is φ = 1828080.

The previous prime is 2742139. The next prime is 2742161. The reversal of 2742147 is 7412472.

It is a happy number.

It is not a de Polignac number, because 2742147 - 2³ = 2742139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 101561 = 2742147 / (2 + 7 + 4 + 2 + 1 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 2742147.

It is not an unprimeable number, because it can be changed into a prime (2742127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50754 + ... + 50807.

It is an arithmetic number, because the mean of its divisors is an integer number (507810).

2^2742147 is an apocalyptic number.

2742147 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2742147 is a deficient number, since it is larger than the sum of its proper divisors (1320333).

2742147 is a wasteful number, since it uses less digits than its factorization.

2742147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101570 (or 101564 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 2742147 is about 1655.9429337994. The cubic root of 2742147 is about 139.9684792983.

The spelling of 2742147 in words is "two million, seven hundred forty-two thousand, one hundred forty-seven".