142420246 has 8 divisors (see below), whose sum is σ = 218175840. Its totient is φ = 69694968.

The previous prime is 142420193. The next prime is 142420253. The reversal of 142420246 is 642024241.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 142420246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757461 + ... + 757648.

It is an arithmetic number, because the mean of its divisors is an integer number (27271980).

Almost surely, 2^142420246 is an apocalyptic number.

142420246 is a deficient number, since it is larger than the sum of its proper divisors (75755594).

142420246 is a wasteful number, since it uses less digits than its factorization.

142420246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515158.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 142420246 is about 11933.9953913180. The cubic root of 142420246 is about 522.2245013297.

Adding to 142420246 its reverse (642024241), we get a palindrome (784444487).

The spelling of 142420246 in words is "one hundred forty-two million, four hundred twenty thousand, two hundred forty-six".