1531142 has 8 divisors (see below), whose sum is σ = 2376000. Its totient is φ = 739144.

The previous prime is 1531129. The next prime is 1531147. The reversal of 1531142 is 2411351.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1531142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531147) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 13142 + ... + 13257.

It is an arithmetic number, because the mean of its divisors is an integer number (297000).

2^1531142 is an apocalyptic number.

1531142 is a deficient number, since it is larger than the sum of its proper divisors (844858).

1531142 is a wasteful number, since it uses less digits than its factorization.

1531142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26430.

The product of its digits is 120, while the sum is 17.

The square root of 1531142 is about 1237.3932277170. The cubic root of 1531142 is about 115.2581974303.

Adding to 1531142 its reverse (2411351), we get a palindrome (3942493).

The spelling of 1531142 in words is "one million, five hundred thirty-one thousand, one hundred forty-two".