1042531 has 4 divisors (see below), whose sum is σ = 1191472. Its totient is φ = 893592.

The previous prime is 1042529. The next prime is 1042571. The reversal of 1042531 is 1352401.

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

It is not a de Polignac number, because 1042531 - 2¹ = 1042529 is a prime.

It is a super-2 number, since 2×1042531² = 2173741771922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74460 + ... + 74473.

It is an arithmetic number, because the mean of its divisors is an integer number (297868).

2^1042531 is an apocalyptic number.

1042531 is the 590-th hex number.

1042531 is a deficient number, since it is larger than the sum of its proper divisors (148941).

1042531 is an equidigital number, since it uses as much as digits as its factorization.

1042531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148940.

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

The square root of 1042531 is about 1021.0440734856. The cubic root of 1042531 is about 101.3980631079.

Adding to 1042531 its reverse (1352401), we get a palindrome (2394932).

The spelling of 1042531 in words is "one million, forty-two thousand, five hundred thirty-one".