1350400021 has 8 divisors (see below), whose sum is σ = 1397285888. Its totient is φ = 1303722000.

The previous prime is 1350400013. The next prime is 1350400031. The reversal of 1350400021 is 1200040531.

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 1350400021 - 2³ = 1350400013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1350399968 and 1350400004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350400031) 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, 38685 + ... + 64786.

It is an arithmetic number, because the mean of its divisors is an integer number (174660736).

Almost surely, 2^1350400021 is an apocalyptic number.

It is an amenable number.

1350400021 is a deficient number, since it is larger than the sum of its proper divisors (46885867).

1350400021 is a wasteful number, since it uses less digits than its factorization.

1350400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103923.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1350400021 is about 36747.7893348702. The cubic root of 1350400021 is about 1105.3186010314.

Adding to 1350400021 its reverse (1200040531), we get a palindrome (2550440552).

The spelling of 1350400021 in words is "one billion, three hundred fifty million, four hundred thousand, twenty-one".