1407226021 has 4 divisors (see below), whose sum is σ = 1407308812. Its totient is φ = 1407143232.

The previous prime is 1407226003. The next prime is 1407226027. The reversal of 1407226021 is 1206227041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 770673121 + 636552900 = 27761^2 + 25230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1407226021 - 2¹³ = 1407217829 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 (1407226027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556 + ... + 53341.

It is an arithmetic number, because the mean of its divisors is an integer number (351827203).

Almost surely, 2^1407226021 is an apocalyptic number.

It is an amenable number.

1407226021 is a deficient number, since it is larger than the sum of its proper divisors (82791).

1407226021 is an equidigital number, since it uses as much as digits as its factorization.

1407226021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82790.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1407226021 is about 37513.0113560615. The cubic root of 1407226021 is about 1120.6103234456.

The spelling of 1407226021 in words is "one billion, four hundred seven million, two hundred twenty-six thousand, twenty-one".