142420678 has 8 divisors (see below), whose sum is σ = 214750080. Its totient is φ = 70837320.

The previous prime is 142420661. The next prime is 142420697. The reversal of 142420678 is 876024241.

It is a happy number.

142420678 is digitally balanced in base 2, 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 super-3 number, since 3×142420678³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186033 + ... + 186796.

It is an arithmetic number, because the mean of its divisors is an integer number (26843760).

Almost surely, 2^142420678 is an apocalyptic number.

142420678 is a deficient number, since it is larger than the sum of its proper divisors (72329402).

142420678 is a wasteful number, since it uses less digits than its factorization.

142420678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373022.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 142420678 is about 11934.0134908588. The cubic root of 142420678 is about 522.2250293463.

The spelling of 142420678 in words is "one hundred forty-two million, four hundred twenty thousand, six hundred seventy-eight".