142540426 has 16 divisors (see below), whose sum is σ = 248966784. Its totient is φ = 59935824.

The previous prime is 142540379. The next prime is 142540439. The reversal of 142540426 is 624045241.

It is a super-2 number, since 2×142540426² = 40635546088522952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142540394 and 142540403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95310 + ... + 96793.

It is an arithmetic number, because the mean of its divisors is an integer number (15560424).

Almost surely, 2^142540426 is an apocalyptic number.

142540426 is a deficient number, since it is larger than the sum of its proper divisors (106426358).

142540426 is a wasteful number, since it uses less digits than its factorization.

142540426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192165.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 142540426 is about 11939.0295250493. The cubic root of 142540426 is about 522.3713514609.

Adding to 142540426 its reverse (624045241), we get a palindrome (766585667).

The spelling of 142540426 in words is "one hundred forty-two million, five hundred forty thousand, four hundred twenty-six".