1042420340012 has 12 divisors (see below), whose sum is σ = 1827029222256. Its totient is φ = 520411990800.

The previous prime is 1042420339997. The next prime is 1042420340021. The reversal of 1042420340012 is 2100430242401.

It is a self number, because there is not a number n which added to its sum of digits gives 1042420340012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199541864 + ... + 199547087.

It is an arithmetic number, because the mean of its divisors is an integer number (152252435188).

Almost surely, 2^{1042420340012} is an apocalyptic number.

It is an amenable number.

1042420340012 is a deficient number, since it is larger than the sum of its proper divisors (784608882244).

1042420340012 is a wasteful number, since it uses less digits than its factorization.

1042420340012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399089608 (or 399089606 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1042420340012 its reverse (2100430242401), we get a palindrome (3142850582413).

The spelling of 1042420340012 in words is "one trillion, forty-two billion, four hundred twenty million, three hundred forty thousand, twelve".