1406120021413 has 4 divisors (see below), whose sum is σ = 1406125128940. Its totient is φ = 1406114913888.

The previous prime is 1406120021399. The next prime is 1406120021417. The reversal of 1406120021413 is 3141200216041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 382366616164 + 1023753405249 = 618358^2 + 1011807^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406120021413 - 2⁹ = 1406120020901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406120021417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2115768 + ... + 2699761.

It is an arithmetic number, because the mean of its divisors is an integer number (351531282235).

Almost surely, 2^{1406120021413} is an apocalyptic number.

It is an amenable number.

1406120021413 is a deficient number, since it is larger than the sum of its proper divisors (5107527).

1406120021413 is an equidigital number, since it uses as much as digits as its factorization.

1406120021413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107526.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1406120021413 its reverse (3141200216041), we get a palindrome (4547320237454).

The spelling of 1406120021413 in words is "one trillion, four hundred six billion, one hundred twenty million, twenty-one thousand, four hundred thirteen".