1012242421 has 2 divisors, whose sum is σ = 1012242422. Its totient is φ = 1012242420.

The previous prime is 1012242401. The next prime is 1012242437. The reversal of 1012242421 is 1242422101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521619921 + 490622500 = 22839^2 + 22150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012242421 - 2¹³ = 1012234229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012242401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506121210 + 506121211.

It is an arithmetic number, because the mean of its divisors is an integer number (506121211).

Almost surely, 2^1012242421 is an apocalyptic number.

It is an amenable number.

1012242421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012242421 is an equidigital number, since it uses as much as digits as its factorization.

1012242421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1012242421 is about 31815.7574324422. The cubic root of 1012242421 is about 1004.0642663607.

Adding to 1012242421 its reverse (1242422101), we get a palindrome (2254664522).

The spelling of 1012242421 in words is "one billion, twelve million, two hundred forty-two thousand, four hundred twenty-one".