531142 has 4 divisors (see below), whose sum is σ = 796716. Its totient is φ = 265570.

The previous prime is 531133. The next prime is 531143. The reversal of 531142 is 241135.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×531142² = 564223648328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132784 + ... + 132787.

It is an arithmetic number, because the mean of its divisors is an integer number (199179).

2⁵³¹¹⁴² is an apocalyptic number.

531142 is a deficient number, since it is larger than the sum of its proper divisors (265574).

531142 is a wasteful number, since it uses less digits than its factorization.

531142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265573.

The product of its digits is 120, while the sum is 16.

The square root of 531142 is about 728.7948957011. The cubic root of 531142 is about 80.9848063765.

Adding to 531142 its reverse (241135), we get a palindrome (772277).

The spelling of 531142 in words is "five hundred thirty-one thousand, one hundred forty-two".