1421351126738 has 16 divisors (see below), whose sum is σ = 2184259615296. Its totient is φ = 693304753680.

The previous prime is 1421351126737. The next prime is 1421351126759. The reversal of 1421351126738 is 8376211531241.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1421351126737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9970133 + ... + 10111688.

It is an arithmetic number, because the mean of its divisors is an integer number (136516225956).

Almost surely, 2^{1421351126738} is an apocalyptic number.

1421351126738 is a deficient number, since it is larger than the sum of its proper divisors (762908488558).

1421351126738 is a wasteful number, since it uses less digits than its factorization.

1421351126738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20082689.

The product of its digits is 241920, while the sum is 44.

Adding to 1421351126738 its reverse (8376211531241), we get a palindrome (9797562657979).

The spelling of 1421351126738 in words is "one trillion, four hundred twenty-one billion, three hundred fifty-one million, one hundred twenty-six thousand, seven hundred thirty-eight".