1456742239 has 4 divisors (see below), whose sum is σ = 1506974760. Its totient is φ = 1406509720.

The previous prime is 1456742233. The next prime is 1456742249. The reversal of 1456742239 is 9322476541.

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 1456742239 - 2¹¹ = 1456740191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1456742195 and 1456742204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1456742233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25116217 + ... + 25116274.

It is an arithmetic number, because the mean of its divisors is an integer number (376743690).

Almost surely, 2^1456742239 is an apocalyptic number.

1456742239 is a deficient number, since it is larger than the sum of its proper divisors (50232521).

1456742239 is an equidigital number, since it uses as much as digits as its factorization.

1456742239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50232520.

The product of its digits is 362880, while the sum is 43.

The square root of 1456742239 is about 38167.2927910796. The cubic root of 1456742239 is about 1133.6027853459.

The spelling of 1456742239 in words is "one billion, four hundred fifty-six million, seven hundred forty-two thousand, two hundred thirty-nine".