142451686 has 8 divisors (see below), whose sum is σ = 230114304. Its totient is φ = 65746920.

The previous prime is 142451681. The next prime is 142451693. The reversal of 142451686 is 686154241.

142451686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142451681) 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, 2739430 + ... + 2739481.

It is an arithmetic number, because the mean of its divisors is an integer number (28764288).

Almost surely, 2^142451686 is an apocalyptic number.

142451686 is a deficient number, since it is larger than the sum of its proper divisors (87662618).

142451686 is a wasteful number, since it uses less digits than its factorization.

142451686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478926.

The product of its digits is 46080, while the sum is 37.

The square root of 142451686 is about 11935.3125639842. The cubic root of 142451686 is about 522.2629264150.

It can be divided in two parts, 14245 and 1686, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 142451686 in words is "one hundred forty-two million, four hundred fifty-one thousand, six hundred eighty-six".