1543142 has 8 divisors (see below), whose sum is σ = 2436600. Its totient is φ = 730944.

The previous prime is 1543133. The next prime is 1543169. The reversal of 1543142 is 2413451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 20267 + ... + 20342.

It is an arithmetic number, because the mean of its divisors is an integer number (304575).

2^1543142 is an apocalyptic number.

1543142 is a deficient number, since it is larger than the sum of its proper divisors (893458).

1543142 is a wasteful number, since it uses less digits than its factorization.

1543142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40630.

The product of its digits is 480, while the sum is 20.

The square root of 1543142 is about 1242.2326674178. The cubic root of 1543142 is about 115.5585181001.

Adding to 1543142 its reverse (2413451), we get a palindrome (3956593).

The spelling of 1543142 in words is "one million, five hundred forty-three thousand, one hundred forty-two".