1421021703554 has 16 divisors (see below), whose sum is σ = 2135234987640. Its totient is φ = 709277779200.

The previous prime is 1421021703511. The next prime is 1421021703589. The reversal of 1421021703554 is 4553071201241.

It can be written as a sum of positive squares in 4 ways, for example, as 236901225625 + 1184120477929 = 486725^2 + 1088173^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397092 + ... + 2930544.

Almost surely, 2^{1421021703554} is an apocalyptic number.

1421021703554 is a deficient number, since it is larger than the sum of its proper divisors (714213284086).

1421021703554 is a wasteful number, since it uses less digits than its factorization.

1421021703554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535765.

The product of its (nonzero) digits is 33600, while the sum is 35.

Adding to 1421021703554 its reverse (4553071201241), we get a palindrome (5974092904795).

The spelling of 1421021703554 in words is "one trillion, four hundred twenty-one billion, twenty-one million, seven hundred three thousand, five hundred fifty-four".