142026021 has 16 divisors (see below), whose sum is σ = 217665600. Its totient is φ = 91418544.

The previous prime is 142026013. The next prime is 142026023. The reversal of 142026021 is 120620241.

It is not a de Polignac number, because 142026021 - 2³ = 142026013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142025985 and 142026003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142026023) by changing a digit.

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, 89911 + ... + 91476.

It is an arithmetic number, because the mean of its divisors is an integer number (13604100).

Almost surely, 2^142026021 is an apocalyptic number.

It is an amenable number.

142026021 is a deficient number, since it is larger than the sum of its proper divisors (75639579).

142026021 is a wasteful number, since it uses less digits than its factorization.

142026021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181425 (or 181419 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 142026021 is about 11917.4670547059. The cubic root of 142026021 is about 521.7422098758.

Adding to 142026021 its reverse (120620241), we get a palindrome (262646262).

The spelling of 142026021 in words is "one hundred forty-two million, twenty-six thousand, twenty-one".