142551 has 12 divisors (see below), whose sum is σ = 210912. Its totient is φ = 92736.

The previous prime is 142547. The next prime is 142553. The reversal of 142551 is 155241.

It is not a de Polignac number, because 142551 - 2² = 142547 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142551.

It is not an unprimeable number, because it can be changed into a prime (142553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (17576).

2¹⁴²⁵⁵¹ is an apocalyptic number.

142551 is a deficient number, since it is larger than the sum of its proper divisors (68361).

142551 is a wasteful number, since it uses less digits than its factorization.

142551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 387 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 142551 is about 377.5592668708. The cubic root of 142551 is about 52.2384268073.

Adding to 142551 its reverse (155241), we get a palindrome (297792).

The spelling of 142551 in words is "one hundred forty-two thousand, five hundred fifty-one".