1542122543 has 8 divisors (see below), whose sum is σ = 1661067408. Its totient is φ = 1423223424.

The previous prime is 1542122521. The next prime is 1542122563. The reversal of 1542122543 is 3452212451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1542122543 - 2²⁸ = 1273687087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542122563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96071 + ... + 110967.

It is an arithmetic number, because the mean of its divisors is an integer number (207633426).

Almost surely, 2^1542122543 is an apocalyptic number.

1542122543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1542122543 is a deficient number, since it is larger than the sum of its proper divisors (118944865).

1542122543 is a wasteful number, since it uses less digits than its factorization.

1542122543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22873.

The product of its digits is 9600, while the sum is 29.

The square root of 1542122543 is about 39269.8681306673. The cubic root of 1542122543 is about 1155.3306507588.

Adding to 1542122543 its reverse (3452212451), we get a palindrome (4994334994).

The spelling of 1542122543 in words is "one billion, five hundred forty-two million, one hundred twenty-two thousand, five hundred forty-three".