1421552902749 has 16 divisors (see below), whose sum is σ = 2166727027200. Its totient is φ = 812109253680.

The previous prime is 1421552902717. The next prime is 1421552902753. The reversal of 1421552902749 is 9472092551241.

It is not a de Polignac number, because 1421552902749 - 2⁵ = 1421552902717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421552902849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8527599 + ... + 8692700.

It is an arithmetic number, because the mean of its divisors is an integer number (135420439200).

Almost surely, 2^{1421552902749} is an apocalyptic number.

It is an amenable number.

1421552902749 is a deficient number, since it is larger than the sum of its proper divisors (745174124451).

1421552902749 is a wasteful number, since it uses less digits than its factorization.

1421552902749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17224240.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 1421552902749 in words is "one trillion, four hundred twenty-one billion, five hundred fifty-two million, nine hundred two thousand, seven hundred forty-nine".