2742431 has 4 divisors (see below), whose sum is σ = 2751672. Its totient is φ = 2733192.

The previous prime is 2742427. The next prime is 2742461. The reversal of 2742431 is 1342472.

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 2742431 - 2² = 2742427 is a prime.

It is a super-2 number, since 2×2742431² = 15041855579522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2742397 and 2742406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742461) 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, 4160 + ... + 4773.

It is an arithmetic number, because the mean of its divisors is an integer number (687918).

2^2742431 is an apocalyptic number.

2742431 is a deficient number, since it is larger than the sum of its proper divisors (9241).

2742431 is an equidigital number, since it uses as much as digits as its factorization.

2742431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240.

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

The square root of 2742431 is about 1656.0286833265. The cubic root of 2742431 is about 139.9733112391.

The spelling of 2742431 in words is "two million, seven hundred forty-two thousand, four hundred thirty-one".