1531112042 has 16 divisors (see below), whose sum is σ = 2321001672. Its totient is φ = 757486080.

The previous prime is 1531112027. The next prime is 1531112069. The reversal of 1531112042 is 2402111351.

It can be written as a sum of positive squares in 4 ways, for example, as 1344762241 + 186349801 = 36671^2 + 13651^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65558 + ... + 85790.

Almost surely, 2^1531112042 is an apocalyptic number.

1531112042 is a deficient number, since it is larger than the sum of its proper divisors (789889630).

1531112042 is a wasteful number, since it uses less digits than its factorization.

1531112042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20633.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1531112042 is about 39129.4268038774. The cubic root of 1531112042 is about 1152.5744571957.

Adding to 1531112042 its reverse (2402111351), we get a palindrome (3933223393).

The spelling of 1531112042 in words is "one billion, five hundred thirty-one million, one hundred twelve thousand, forty-two".