1242432523 has 8 divisors (see below), whose sum is σ = 1262396880. Its totient is φ = 1222510080.

The previous prime is 1242432493. The next prime is 1242432547. The reversal of 1242432523 is 3252342421.

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 1242432523 - 2¹⁷ = 1242301451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242432491 and 1242432500.

It is not an unprimeable number, because it can be changed into a prime (1242432563) 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, 52263 + ... + 72223.

It is an arithmetic number, because the mean of its divisors is an integer number (157799610).

Almost surely, 2^1242432523 is an apocalyptic number.

1242432523 is a deficient number, since it is larger than the sum of its proper divisors (19964357).

1242432523 is an equidigital number, since it uses as much as digits as its factorization.

1242432523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20957.

The product of its digits is 11520, while the sum is 28.

The square root of 1242432523 is about 35248.1563063942. The cubic root of 1242432523 is about 1075.0391254554.

Adding to 1242432523 its reverse (3252342421), we get a palindrome (4494774944).

The spelling of 1242432523 in words is "one billion, two hundred forty-two million, four hundred thirty-two thousand, five hundred twenty-three".