1214400400042 has 4 divisors (see below), whose sum is σ = 1821600600066. Its totient is φ = 607200200020.

The previous prime is 1214400399983. The next prime is 1214400400069. The reversal of 1214400400042 is 2400040044121.

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., 743407808521 + 470992591521 = 862211^2 + 686289^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1214400399986 and 1214400400022.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303600100009 + ... + 303600100012.

Almost surely, 2^{1214400400042} is an apocalyptic number.

1214400400042 is a deficient number, since it is larger than the sum of its proper divisors (607200200024).

1214400400042 is an equidigital number, since it uses as much as digits as its factorization.

1214400400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607200200023.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 1214400400042 its reverse (2400040044121), we get a palindrome (3614440444163).

The spelling of 1214400400042 in words is "one trillion, two hundred fourteen billion, four hundred million, four hundred thousand, forty-two".