1542252010531 has 4 divisors (see below), whose sum is σ = 1623423169000. Its totient is φ = 1461080852064.

The previous prime is 1542252010499. The next prime is 1542252010549. The reversal of 1542252010531 is 1350102522451.

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

It is a cyclic number.

It is not a de Polignac number, because 1542252010531 - 2⁵ = 1542252010499 is a prime.

It is a super-2 number, since 2×1542252010531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1542252010493 and 1542252010502.

It is not an unprimeable number, because it can be changed into a prime (1542252010591) 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, 40585579206 + ... + 40585579243.

It is an arithmetic number, because the mean of its divisors is an integer number (405855792250).

Almost surely, 2^{1542252010531} is an apocalyptic number.

1542252010531 is a deficient number, since it is larger than the sum of its proper divisors (81171158469).

1542252010531 is an equidigital number, since it uses as much as digits as its factorization.

1542252010531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81171158468.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1542252010531 its reverse (1350102522451), we get a palindrome (2892354532982).

The spelling of 1542252010531 in words is "one trillion, five hundred forty-two billion, two hundred fifty-two million, ten thousand, five hundred thirty-one".