1356519421 has 8 divisors (see below), whose sum is σ = 1473977600. Its totient is φ = 1243667520.

The previous prime is 1356519377. The next prime is 1356519473. The reversal of 1356519421 is 1249156531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1356519421 - 2⁷ = 1356519293 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 (1356319421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150956 + ... + 1152133.

It is an arithmetic number, because the mean of its divisors is an integer number (184247200).

Almost surely, 2^1356519421 is an apocalyptic number.

It is an amenable number.

1356519421 is a deficient number, since it is larger than the sum of its proper divisors (117458179).

1356519421 is a wasteful number, since it uses less digits than its factorization.

1356519421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303139.

The product of its digits is 32400, while the sum is 37.

The square root of 1356519421 is about 36830.9573728406. The cubic root of 1356519421 is about 1106.9856861498.

The spelling of 1356519421 in words is "one billion, three hundred fifty-six million, five hundred nineteen thousand, four hundred twenty-one".