1457542 has 4 divisors (see below), whose sum is σ = 2186316. Its totient is φ = 728770.

The previous prime is 1457513. The next prime is 1457551. The reversal of 1457542 is 2457541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2457541 = 251 ⋅9791.

It is a self number, because there is not a number n which added to its sum of digits gives 1457542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364384 + ... + 364387.

It is an arithmetic number, because the mean of its divisors is an integer number (546579).

2^1457542 is an apocalyptic number.

1457542 is a deficient number, since it is larger than the sum of its proper divisors (728774).

1457542 is an equidigital number, since it uses as much as digits as its factorization.

1457542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728773.

The product of its digits is 5600, while the sum is 28.

The square root of 1457542 is about 1207.2870412624. The cubic root of 1457542 is about 113.3810199170.

Subtracting 1457542 from its reverse (2457541), we obtain a palindrome (999999).

The spelling of 1457542 in words is "one million, four hundred fifty-seven thousand, five hundred forty-two".