1542231823 has 8 divisors (see below), whose sum is σ = 1781401680. Its totient is φ = 1319556480.

The previous prime is 1542231793. The next prime is 1542231839. The reversal of 1542231823 is 3281322451.

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

It is not a de Polignac number, because 1542231823 - 2⁵ = 1542231791 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 (1542231853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4123428 + ... + 4123801.

It is an arithmetic number, because the mean of its divisors is an integer number (222675210).

Almost surely, 2^1542231823 is an apocalyptic number.

1542231823 is a deficient number, since it is larger than the sum of its proper divisors (239169857).

1542231823 is a wasteful number, since it uses less digits than its factorization.

1542231823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8247257.

The product of its digits is 11520, while the sum is 31.

The square root of 1542231823 is about 39271.2595036115. The cubic root of 1542231823 is about 1155.3579403219.

The spelling of 1542231823 in words is "one billion, five hundred forty-two million, two hundred thirty-one thousand, eight hundred twenty-three".