1542431023 has 4 divisors (see below), whose sum is σ = 1762778320. Its totient is φ = 1322083728.

The previous prime is 1542430979. The next prime is 1542431087. The reversal of 1542431023 is 3201342451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3201342451 = 29 ⋅110391119.

It is not a de Polignac number, because 1542431023 - 2²¹ = 1540333871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542431123) 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, 110173638 + ... + 110173651.

It is an arithmetic number, because the mean of its divisors is an integer number (440694580).

Almost surely, 2^1542431023 is an apocalyptic number.

1542431023 is a deficient number, since it is larger than the sum of its proper divisors (220347297).

1542431023 is an equidigital number, since it uses as much as digits as its factorization.

1542431023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220347296.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1542431023 is about 39273.7956276192. The cubic root of 1542431023 is about 1155.4076815239.

Adding to 1542431023 its reverse (3201342451), we get a palindrome (4743773474).

The spelling of 1542431023 in words is "one billion, five hundred forty-two million, four hundred thirty-one thousand, twenty-three".