142420245 has 16 divisors (see below), whose sum is σ = 248588352. Its totient is φ = 69052160.

The previous prime is 142420193. The next prime is 142420253. The reversal of 142420245 is 542024241.

It is a happy number.

It is not a de Polignac number, because 142420245 - 2⁹ = 142419733 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 431412 + ... + 431741.

It is an arithmetic number, because the mean of its divisors is an integer number (15536772).

Almost surely, 2^142420245 is an apocalyptic number.

142420245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142420245 is a deficient number, since it is larger than the sum of its proper divisors (106168107).

142420245 is a wasteful number, since it uses less digits than its factorization.

142420245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863172.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 142420245 is about 11933.9953494209. The cubic root of 142420245 is about 522.2245001074.

Adding to 142420245 its reverse (542024241), we get a palindrome (684444486).

The spelling of 142420245 in words is "one hundred forty-two million, four hundred twenty thousand, two hundred forty-five".