1356054121 has 4 divisors (see below), whose sum is σ = 1368727632. Its totient is φ = 1343380612.

The previous prime is 1356054109. The next prime is 1356054137. The reversal of 1356054121 is 1214506531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1214506531 = 7 ⋅173500933.

It is a cyclic number.

It is not a de Polignac number, because 1356054121 - 2²¹ = 1353956969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1356054121.

It is not an unprimeable number, because it can be changed into a prime (1356054151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6336595 + ... + 6336808.

It is an arithmetic number, because the mean of its divisors is an integer number (342181908).

Almost surely, 2^1356054121 is an apocalyptic number.

It is an amenable number.

1356054121 is a deficient number, since it is larger than the sum of its proper divisors (12673511).

1356054121 is a wasteful number, since it uses less digits than its factorization.

1356054121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12673510.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1356054121 is about 36824.6401340190. The cubic root of 1356054121 is about 1106.8591025477.

The spelling of 1356054121 in words is "one billion, three hundred fifty-six million, fifty-four thousand, one hundred twenty-one".