142421422 has 16 divisors (see below), whose sum is σ = 250980912. Its totient is φ = 59757120.

The previous prime is 142421417. The next prime is 142421491. The reversal of 142421422 is 224124241.

It is a super-2 number, since 2×142421422² = 40567722889004168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 142421393 and 142421402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248703 + ... + 249274.

It is an arithmetic number, because the mean of its divisors is an integer number (15686307).

Almost surely, 2^142421422 is an apocalyptic number.

142421422 is a deficient number, since it is larger than the sum of its proper divisors (108559490).

142421422 is a wasteful number, since it uses less digits than its factorization.

142421422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498003.

The product of its digits is 1024, while the sum is 22.

The square root of 142421422 is about 11934.0446622258. The cubic root of 142421422 is about 522.2259387057.

Adding to 142421422 its reverse (224124241), we get a palindrome (366545663).

The spelling of 142421422 in words is "one hundred forty-two million, four hundred twenty-one thousand, four hundred twenty-two".