457720043 has 4 divisors (see below), whose sum is σ = 499330968. Its totient is φ = 416109120.

The previous prime is 457720037. The next prime is 457720049. The reversal of 457720043 is 340027754.

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

It is an interprime number because it is at equal distance from previous prime (457720037) and next prime (457720049).

It is a cyclic number.

It is not a de Polignac number, because 457720043 - 2¹⁰ = 457719019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 457719991 and 457720009.

It is not an unprimeable number, because it can be changed into a prime (457720049) 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, 20805446 + ... + 20805467.

It is an arithmetic number, because the mean of its divisors is an integer number (124832742).

Almost surely, 2^457720043 is an apocalyptic number.

457720043 is a deficient number, since it is larger than the sum of its proper divisors (41610925).

457720043 is a wasteful number, since it uses less digits than its factorization.

457720043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41610924.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 457720043 is about 21394.3927934401. The cubic root of 457720043 is about 770.6667879144. Note that the first 3 decimals are identical.

Adding to 457720043 its reverse (340027754), we get a palindrome (797747797).

The spelling of 457720043 in words is "four hundred fifty-seven million, seven hundred twenty thousand, forty-three".