142344551 has 4 divisors (see below), whose sum is σ = 142444104. Its totient is φ = 142245000.

The previous prime is 142344547. The next prime is 142344569. The reversal of 142344551 is 155443241.

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 142344551 - 2² = 142344547 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 (142344511) 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, 47600 + ... + 50501.

It is an arithmetic number, because the mean of its divisors is an integer number (35611026).

Almost surely, 2^142344551 is an apocalyptic number.

142344551 is a deficient number, since it is larger than the sum of its proper divisors (99553).

142344551 is an equidigital number, since it uses as much as digits as its factorization.

142344551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99552.

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

The square root of 142344551 is about 11930.8235675497. The cubic root of 142344551 is about 522.1319658229.

Adding to 142344551 its reverse (155443241), we get a palindrome (297787792).

The spelling of 142344551 in words is "one hundred forty-two million, three hundred forty-four thousand, five hundred fifty-one".