1457642 has 16 divisors (see below), whose sum is σ = 2332800.
Its totient is φ = 681120.
The previous prime is 1457639. The next prime is 1457647. The reversal of 1457642 is 2467541.
It is not an unprimeable number, because it can be changed into a prime (1457647) 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 7 ways as a sum of consecutive naturals, for example, 3167 + ... + 3597.
It is an arithmetic number, because the mean of its divisors is an integer number (145800).
21457642 is an apocalyptic number.
1457642 is a deficient number, since it is larger than the sum of its proper divisors (875158).
1457642 is a wasteful number, since it uses less digits than its factorization.
1457642 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 541.
The product of its digits is 6720, while the sum is 29.
The square root of 1457642 is about 1207.3284557236.
The cubic root of 1457642 is about 113.3836128309.
The spelling of 1457642 in words is "one million, four hundred fifty-seven thousand, six hundred forty-two".