1571142 has 16 divisors (see below), whose sum is σ = 3244032. Its totient is φ = 506760.

The previous prime is 1571137. The next prime is 1571149. The reversal of 1571142 is 2411751.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1571149) 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, 4038 + ... + 4409.

It is an arithmetic number, because the mean of its divisors is an integer number (202752).

2^1571142 is an apocalyptic number.

1571142 is an abundant number, since it is smaller than the sum of its proper divisors (1672890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1571142 is a wasteful number, since it uses less digits than its factorization.

1571142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8483.

The product of its digits is 280, while the sum is 21.

The square root of 1571142 is about 1253.4520333862. The cubic root of 1571142 is about 116.2532615572.

Adding to 1571142 its reverse (2411751), we get a palindrome (3982893).

It can be divided in two parts, 15711 and 42, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 1571142 in words is "one million, five hundred seventy-one thousand, one hundred forty-two".