142311551 has 16 divisors (see below), whose sum is σ = 148009344. Its totient is φ = 136772064.

The previous prime is 142311541. The next prime is 142311563. The reversal of 142311551 is 155113241.

It is a cyclic number.

It is not a de Polignac number, because 142311551 - 2⁶ = 142311487 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 (142311541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 872996 + ... + 873158.

It is an arithmetic number, because the mean of its divisors is an integer number (9250584).

Almost surely, 2^142311551 is an apocalyptic number.

142311551 is a deficient number, since it is larger than the sum of its proper divisors (5697793).

142311551 is a wasteful number, since it uses less digits than its factorization.

142311551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470.

The product of its digits is 600, while the sum is 23.

The square root of 142311551 is about 11929.4405149613. The cubic root of 142311551 is about 522.0916137653.

Adding to 142311551 its reverse (155113241), we get a palindrome (297424792).

The spelling of 142311551 in words is "one hundred forty-two million, three hundred eleven thousand, five hundred fifty-one".