142302551 has 4 divisors (see below), whose sum is σ = 143245104. Its totient is φ = 141360000.

The previous prime is 142302499. The next prime is 142302553. The reversal of 142302551 is 155203241.

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 142302551 - 2¹⁰ = 142301527 is a prime.

It is a super-2 number, since 2×142302551² = 40500032042215202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142302553) 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, 471050 + ... + 471351.

It is an arithmetic number, because the mean of its divisors is an integer number (35811276).

Almost surely, 2^142302551 is an apocalyptic number.

142302551 is a deficient number, since it is larger than the sum of its proper divisors (942553).

142302551 is an equidigital number, since it uses as much as digits as its factorization.

142302551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942552.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 142302551 is about 11929.0632909713. The cubic root of 142302551 is about 522.0806075761.

Adding to 142302551 its reverse (155203241), we get a palindrome (297505792).

The spelling of 142302551 in words is "one hundred forty-two million, three hundred two thousand, five hundred fifty-one".