142447814428 has 36 divisors (see below), whose sum is σ = 268999691968. Its totient is φ = 65929533120.

The previous prime is 142447814419. The next prime is 142447814477. The reversal of 142447814428 is 824418744241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1020201 + ... + 1151392.

Almost surely, 2^142447814428 is an apocalyptic number.

It is an amenable number.

142447814428 is a deficient number, since it is larger than the sum of its proper divisors (126551877540).

142447814428 is a wasteful number, since it uses less digits than its factorization.

142447814428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171674 (or 2171649 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 49.

The spelling of 142447814428 in words is "one hundred forty-two billion, four hundred forty-seven million, eight hundred fourteen thousand, four hundred twenty-eight".