1354005021 has 8 divisors (see below), whose sum is σ = 1807033120. Its totient is φ = 901823472.

The previous prime is 1354005019. The next prime is 1354005043. The reversal of 1354005021 is 1205004531.

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

It is not a de Polignac number, because 1354005021 - 2¹ = 1354005019 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 (1354005061) 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, 207895 + ... + 214308.

It is an arithmetic number, because the mean of its divisors is an integer number (225879140).

Almost surely, 2^1354005021 is an apocalyptic number.

It is an amenable number.

1354005021 is a deficient number, since it is larger than the sum of its proper divisors (453028099).

1354005021 is a wasteful number, since it uses less digits than its factorization.

1354005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423275.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1354005021 is about 36796.8072120395. The cubic root of 1354005021 is about 1106.3013056482.

Adding to 1354005021 its reverse (1205004531), we get a palindrome (2559009552).

The spelling of 1354005021 in words is "one billion, three hundred fifty-four million, five thousand, twenty-one".