2042542531 has 12 divisors (see below), whose sum is σ = 2142335272. Its totient is φ = 1947217536.

The previous prime is 2042542519. The next prime is 2042542543. The reversal of 2042542531 is 1352452402.

It is an interprime number because it is at equal distance from previous prime (2042542519) and next prime (2042542543).

It is not a de Polignac number, because 2042542531 - 2⁵ = 2042542499 is a prime.

It is a super-2 number, since 2×2042542531² = 8343959981887771922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2042542531.

It is not an unprimeable number, because it can be changed into a prime (2042542501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156115 + ... + 168691.

Almost surely, 2^2042542531 is an apocalyptic number.

2042542531 is a deficient number, since it is larger than the sum of its proper divisors (99792741).

2042542531 is a wasteful number, since it uses less digits than its factorization.

2042542531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930 (or 12907 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2042542531 is about 45194.4966893094. The cubic root of 2042542531 is about 1268.7918183180.

Adding to 2042542531 its reverse (1352452402), we get a palindrome (3394994933).

The spelling of 2042542531 in words is "two billion, forty-two million, five hundred forty-two thousand, five hundred thirty-one".