142402523 has 4 divisors (see below), whose sum is σ = 150779160. Its totient is φ = 134025888.

The previous prime is 142402517. The next prime is 142402531. The reversal of 142402523 is 325204241.

It is a happy number.

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 142402523 - 2²⁴ = 125625307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142402543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4188293 + ... + 4188326.

It is an arithmetic number, because the mean of its divisors is an integer number (37694790).

Almost surely, 2^142402523 is an apocalyptic number.

142402523 is a deficient number, since it is larger than the sum of its proper divisors (8376637).

142402523 is an equidigital number, since it uses as much as digits as its factorization.

142402523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8376636.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 142402523 is about 11933.2528256130. The cubic root of 142402523 is about 522.2028382843.

Adding to 142402523 its reverse (325204241), we get a palindrome (467606764).

The spelling of 142402523 in words is "one hundred forty-two million, four hundred two thousand, five hundred twenty-three".