142400163506 has 4 divisors (see below), whose sum is σ = 213600245262. Its totient is φ = 71200081752.

The previous prime is 142400163481. The next prime is 142400163523. The reversal of 142400163506 is 605361004241.

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., 107397121225 + 35003042281 = 327715^2 + 187091^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35600040875 + ... + 35600040878.

Almost surely, 2^142400163506 is an apocalyptic number.

142400163506 is a deficient number, since it is larger than the sum of its proper divisors (71200081756).

142400163506 is an equidigital number, since it uses as much as digits as its factorization.

142400163506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71200081755.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 142400163506 its reverse (605361004241), we get a palindrome (747761167747).

The spelling of 142400163506 in words is "one hundred forty-two billion, four hundred million, one hundred sixty-three thousand, five hundred six".