1075542421 has 2 divisors, whose sum is σ = 1075542422. Its totient is φ = 1075542420.

The previous prime is 1075542389. The next prime is 1075542437. The reversal of 1075542421 is 1242455701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694902321 + 380640100 = 26361^2 + 19510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1075542421 - 2⁵ = 1075542389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1075542121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537771210 + 537771211.

It is an arithmetic number, because the mean of its divisors is an integer number (537771211).

Almost surely, 2^1075542421 is an apocalyptic number.

It is an amenable number.

1075542421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075542421 is an equidigital number, since it uses as much as digits as its factorization.

1075542421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 1075542421 is about 32795.4634210282. The cubic root of 1075542421 is about 1024.5720747124.

The spelling of 1075542421 in words is "one billion, seventy-five million, five hundred forty-two thousand, four hundred twenty-one".