142420052 has 12 divisors (see below), whose sum is σ = 249384576. Its totient is φ = 71167320.

The previous prime is 142420051. The next prime is 142420079. The reversal of 142420052 is 250024241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142420051) 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, 2474 + ... + 17057.

It is an arithmetic number, because the mean of its divisors is an integer number (20782048).

Almost surely, 2^142420052 is an apocalyptic number.

It is an amenable number.

142420052 is a deficient number, since it is larger than the sum of its proper divisors (106964524).

142420052 is a wasteful number, since it uses less digits than its factorization.

142420052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21358 (or 21356 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 142420052 is about 11933.9872632746. The cubic root of 142420052 is about 522.2242642108.

Adding to 142420052 its reverse (250024241), we get a palindrome (392444293).

The spelling of 142420052 in words is "one hundred forty-two million, four hundred twenty thousand, fifty-two".