1354656421 has 4 divisors (see below), whose sum is σ = 1360277644. Its totient is φ = 1349035200.

The previous prime is 1354656409. The next prime is 1354656449. The reversal of 1354656421 is 1246564531.

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 675272196 + 679384225 = 25986^2 + 26065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354656421 - 2⁵ = 1354656389 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 (1354656491) 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, 2810250 + ... + 2810731.

It is an arithmetic number, because the mean of its divisors is an integer number (340069411).

Almost surely, 2^1354656421 is an apocalyptic number.

It is an amenable number.

1354656421 is a deficient number, since it is larger than the sum of its proper divisors (5621223).

1354656421 is an equidigital number, since it uses as much as digits as its factorization.

1354656421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621222.

The product of its digits is 86400, while the sum is 37.

The square root of 1354656421 is about 36805.6574591461. The cubic root of 1354656421 is about 1106.4786878403.

The spelling of 1354656421 in words is "one billion, three hundred fifty-four million, six hundred fifty-six thousand, four hundred twenty-one".