142401521426 has 4 divisors (see below), whose sum is σ = 213602282142. Its totient is φ = 71200760712.

The previous prime is 142401521393. The next prime is 142401521443. The reversal of 142401521426 is 624125104241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72283011025 + 70118510401 = 268855^2 + 264799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142401521392 and 142401521401.

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 as a sum of consecutive naturals, namely, 35600380355 + ... + 35600380358.

Almost surely, 2^142401521426 is an apocalyptic number.

142401521426 is a deficient number, since it is larger than the sum of its proper divisors (71200760716).

142401521426 is an equidigital number, since it uses as much as digits as its factorization.

142401521426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71200760715.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 142401521426 its reverse (624125104241), we get a palindrome (766526625667).

It can be divided in two parts, 1424015 and 21426, that added together give a palindrome (1445441).

The spelling of 142401521426 in words is "one hundred forty-two billion, four hundred one million, five hundred twenty-one thousand, four hundred twenty-six".